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Question Bank

Gujarat Police SI (Wireless) Exam - English

Duration: 180 · Questions: 200 · Max Marks: 200 · Language: 1

View Gujarat Police Sub Inspector (Wireless) 2026 Exam Page

Reasoning & Data Interpretation

1
How many such pairs of letters are there in the word ‘CLEANLINESS’ each of the which has as many letters between them in the word as they have in the English alphabet, in the same sequence?
  1. A.Two
  2. B.Three
  3. C.Five
  4. D.Four
  5. E.None of these
2
Team A has scored more goals than Team B
Team C has scored fewer goals than Team B
Team A has scored fewer goals than Team C .
If the first two statements are true, the third statement is
  1. A.True
  2. B.False
  3. C.Uncertain
  4. D.None
3
If it is possible to make only one meaningful word with the second, the third, the sixth and the eight letters of the word FRAGMENT using each only once, which of the following will be the third letter of that word ? If no such word can be formed, give ‘X’ as the answer and if more than one such word can be formed, give ‘Y’ as the answer.
  1. A.A
  2. B.E
  3. C.T
  4. D.X
  5. E.Y
4
How many such letters are there in the word ORIENTAL each of which is as far away from the beginning of the word as when they are arranged alphabetically?
  1. A.None            
  2. B.One         
  3. C.Two       
  4. D.Three        
  5. E.More than three
5
How many such pairs of letters in the word CREDIT each of which has as many letters between them in the word as in the English alphabet?
  1. A.None
  2. B.One
  3. C.Two
  4. D.Three
  5. E.More than three
6
How many meaningful words can be made from the letters ‘LMEA’ using each letter only once in each word?
  1. A.None
  2. B.One
  3. C.Two
  4. D.Three
  5. E.More than three
7
If it is possible to make only one meaningful word with the first, the second, the seventh and the eighth letters of the word TEMPORAL, which of the following will be the first letter of that word? If more than one such word can be made, give ‘Y’ as the answer and if no such word can be made, give ‘X’ as the answer.
  1. A.T
  2. B.L
  3. C.E
  4. D.Y
  5. E.X
8
If the letters of the word HANDOVER are arranged alphabetically from left to right how many letters will remain at the same position?
  1. A.None
  2. B.One
  3. C.Two
  4. D.Three
  5. E.More than three
9
How many such pairs of letters are there in the word EXCURSION, each of which has as many letters between them in the word as they have in the English alphabet?
  1. A.None
  2. B.One
  3. C.Two
  4. D.Three
  5. E.More than three
10
If it is possible to make only one meaningful word with the first, the second, the third, the sixth and the eighth letters of the word DEVIATION first letter of that word is your answer? If more than one such word can be made formed your answer is ‘A’  and if no such word can be formed your answer is ‘B’.
  1. A.V
  2. B.T
  3. C.E
  4. D.A
  5. E.B
11
Which letter in this alphabet is the eighth letter to the right of the letter and which is tenth letter to the left of the last but one letter of the alphabet ?
  1. A.X
  2. B.W
  3. C.I
  4. D.H
12
If the third alphabet of each of the words is changed to the next alphabet in the English alphabetical series, which of the following will form a meaningful English word?
  1. A.SUM
  2. B.BIG
  3. C.Both BIG and THE
  4. D.FOR
  5. E.Both FOR and BIG
13
If the given words are arranged in the order as they would appear in a dictionary from left to right, which of the following will be second from the right ?
  1. A.AND
  2. B.FOR
  3. C.THE
  4. D.BIG
  5. E.SUM
14
If second alphabet in each of the words is changed to next alphabet in the English alphabetical order, how many words having two vowels (same or different vowels) will be formed ?
  1. A.None
  2. B.One
  3. C.Two
  4. D.Three
  5. E.Four
15
How many letters are there in the English alphabetical series between the second letter of the word which is second from the right and the second letter of the word which is second from the left of the given words?
  1. A.Two
  2. B.Five
  3. C.Six
  4. D.Nine
  5. E.Three
16
If in each of the given words, each of the consonant is changed to previous letter and each vowel is changed to next letter in the English alphabetical series, in how many words thus formed will no vowels appear?
  1. A.None
  2. B.One
  3. C.Two
  4. D.Three
  5. E.More than three
17
If the third alphabet in each of the words is changed to the next alphabet in the English alphabetical order, how many words having two vowels (same or different vowels) will be formed?
  1. A.None
  2. B.One
  3. C.Two
  4. D.Three
  5. E.Four
18
If the position of the first and the second alphabets of each of the words are interchanged, which of the following will form a meaningful English word?
  1. A.Both CAT and OWN
  2. B.Both BRU and INK
  3. C.Only CAT
  4. D.Only INK
  5. E.Only LEG
19
If the given words are arranged in the order as they would appear in a dictionary from left to right, which of the following will be exactly in the middle of the five words?
  1. A.OWN
  2. B.LEG
  3. C.BRU
  4. D.CAT
  5. E.INK
20
If in each of the given words, each of the consonants is changed to previous letter and each vowel is changed to next letter in the English alphabetical series, in how many words thus formed will the same alphabet appear twice?
  1. A.None
  2. B.One
  3. C.Two
  4. D.Three
  5. E.More than three
21
How many employees of bank ‘X’ opted for VRS ?
(I) 18% of the 950 officer cadre employees and 6% of the 1100 of all other cadre employees opted for VRS.

(II) 28% of the employees in the age group of 51 to 56 and 17% of the employees in all other age groups opted for VRS.
  1. A.Statement (I) ALONE is sufficient, but statement (II) alone is not sufficient
  2. B.Statement (II) ALONE is sufficient, but statement (I) alone is not sufficient
  3. C.BOTH statements TOGETHER are sufficient, but NEITHER statement alone is sufficient
  4. D.EACH statement ALONE is sufficient
22
The area of a playground is 1600 square meters. What is its perimeter ?
(I) It is a perfect square playground
(II) It costs Rs.3200 to put a fence around the playground at the rate of Rs.20 per meter.
  1. A.Statement (I) ALONE is sufficient, but statement (II) alone is not sufficient
  2. B.Statement (II) ALONE is sufficient, but statement (I) alone is not sufficient
  3. C.BOTH statements TOGETHER are sufficient, but NEITHER statement alone is sufficient
  4. D.EACH statement ALONE is sufficient
23
What is the value of m – n ÷ 37 ?
(I) m is the largest possible six-digit number and n is the smallest possible six-digit number.
(II) The difference between m and n is known.
  1. A.Statement (I) ALONE is sufficient, but statement (II) alone is not sufficient
  2. B.Statement (II) ALONE is sufficient, but statement (I) alone is not sufficient
  3. C.BOTH statements TOGETHER are sufficient, but NEITHER statement alone is sufficient
  4. D.EACH statement ALONE is sufficient
24
What is the value of x  ?
(I) If 10 is added to x, the result is 34.
(II) If x is multiplied by y, the result is 38.
  1. A.Statement (I) ALONE is sufficient, but statement (II) alone is not sufficient
  2. B.Statement (II) ALONE is sufficient, but statement (I) alone is not sufficient
  3. C.BOTH statements TOGETHER are sufficient, but NEITHER statement alone is sufficient
  4. D.EACH statement ALONE is sufficient
25
What was the total compound interest on a sum after three years  ?
(I) The interest after one year was Rs. 100 and the sum after was Rs.1000.
(II) The difference between simple and compound interest on a sum of Rs.1000 at the end of two years was Rs.10.
  1. A.Statement (I) ALONE is sufficient, but statement (II) alone is not sufficient
  2. B.Statement (II) ALONE is sufficient, but statement (I) alone is not sufficient
  3. C.BOTH statements TOGETHER are sufficient, but NEITHER statement alone is sufficient
  4. D.EACH statement ALONE is sufficient

Quantitative Aptitude

1
The cash difference between the selling prices of an article at a profit of 4% and 6% is Rs. 3. The ratio of the two selling prices is:__________ ?
  1. A.51:52
  2. B.52:53
  3. C.51:53
  4. D.52:55
2
Which of the following numbers is irrational ?
  1. A.√49
  2. B.0.125
  3. C.√2
  4. D.22/7
3
356 x 936 – 356 x 836 = ?
  1. A.35600  
  2. B.34500
  3. C.9630
  4. D.93600
4
Arrange in descending order: 5/8, 7/10, 3/4
  1. A.3/4 > 7/10 > 5/8
  2. B.7/10 > 3/4 > 5/8
  3. C.3/4 > 5/8 > 7/10
  4. D.5/8 > 7/10 > 3/4
5
What is (3^{4} times 9^{2}) ?
  1. A.36
  2. B.38
  3. C.310
  4. D.96
     
6
If 34X-2 = 729, then find the value of X.
  1. A.4     
  2. B.3
  3. C.2 
  4. D.5
7
Convert 0.6 into fraction ?
  1. A.3/5
  2. B.2/3
  3. C.4/5
8
The no. plate of a bus had peculiarity. The bus number was a perfect square. It was also a perfect square when the plate numbers were reversed. The bus company had only five hundred buses numbered from 1 to 500. What was the number ?
  1. A.169  
  2. B.36
  3. C.196 
  4. D.Can not say
9
If a and b are positive integers, such that ab = 125, then (a-b)a+b-4 = ?
  1. A.16   
  2. B.25
  3. C.28  
  4. D.30
10
If x*y = x2 + y2 – xy, then value of 9*11 is
  1. A.93     
  2. B.103
  3. C.60.5
  4. D.121
11
Which is greater ?
  1. A.15/16
  2. B.17/18
  3. C.Equal
  4. D.Cannot compare
12
If sum of two numbers is 42 and their product is 437, then find their difference.
  1. A.3 
  2. B.4
  3. C.5    
  4. D.7
13
Write the 44000 in Roman numerals
  1. A.XLI 
  2. B.XLVI
  3. C.XLIV 
  4. D.XLVIC
14
Convert 0.0909… into fraction ?
  1. A.1/11
  2. B.9/11
  3. C.1/9
  4. D.9/10
15
What is (98 times 102) ?
  1. A.9996
  2. B.10000
  3. C.10096
  4. D.10196
16
Chemistry but not in Physics.
  1. A.318
  2. B.198
  3. C.213 
  4. D.206
17
Physics or Maths but not in Chemistry.
  1. A.558   
  2. B.718
  3. C.628  
  4. D.None of these
18
What is the percentage of persons who read all the three papers ?
  1. A.20%  
  2. B.25%
  3. C.30%  
  4. D.40%
19
What is the percentage of persons who read only two papers?
  1. A.19%  
  2. B.31%
  3. C.44%
  4. D.None of these
20
What is the percentage of persons who read only one paper ?
  1. A.38% 
  2. B.48%
  3. C.51%  
  4. D.None of these
21
What is the percentage of persons who read only A but neither B nor C ?
  1. A.4%
  2. B.3%
  3. C.1%  
  4. D.None of these
22
If A and B are any two sets, then what is A á´– (A á´— B) equal to ?
  1. A.Complement of A 
  2. B.Complement of B
  3. C.B   
  4. D.A
23
40% of the people read newspaper X, 50% read newspaper Y and 10% read both the papers. What percentage of the people read neither newspaper ?
  1. A.10%    
  2. B.15%
  3. C.20%  
  4. D.25%
24
The passengers who like only coffee is greater than the passengers who like only lassi by
  1. A.25%   
  2. B.100%
  3. C.75%   
  4. D.0%
25
The percentage of passengers who like both tea and lassi but not coffee, is
  1. A.15 
  2. B.25
  3. C.40 
  4. D.75

Constitution of India

1
Which Act gave separate electorate rights to Muslims in India ?
  1. A.The Indian Councils Act, 1909
  2. B.The Government of India Act, 1915
  3. C.The Government of India Act, 1919
  4. D.The Government of India Act, 1935
2
Which one of the following made the Indian Legislature bicameral ?
  1. A.The Indian Councils Act, 1909
  2. B.Government of India Act, 1919
  3. C.Government of India Act, 1935
  4. D.Indian Independence Act, 1947
3
'Diarchy' was established in India by which of the following ?
  1. A.The Indian Councils Act, 1909
  2. B.The Government of India Act, 1935
  3. C.The Government of India Act, 1919
  4. D.None of the above
4
Which one of the following aimed at providing a federal structure for India ?
  1. A.Indian Councils Act, 1909
  2. B.Government of India Act, 1919
  3. C.Government of India Act, 1935
  4. D.Indian Independence Act, 1947
5
As a guardian of the government of India Act, 1935 a Court was constituted which was called.
  1. A.Privy Council
  2. B.Supreme Court
  3. C.High Court
  4. D.Federal Court
6
Under the Government of India Act 1935, the Federal court had -
  1. A.Original jurisdiction only
  2. B.Appellate jurisdiction only
  3. C.Advisory jurisdiction only
  4. D.Original, appellate and advisory jurisdiction
7
Under the Government of India's Act 1935, how many Governors and Chief Commissioners provinces constituted in British India ?
  1. A.14 and 7
  2. B.11 and 7
  3. C.15 and 9
  4. D.None of the above
8
The Mountbaten plan led to the enactment of :
  1. A.Government of India Act, 1919
  2. B.Government of India Act, 1935
  3. C.The Indian Independence Act, 1947
  4. D.None of the above
9
The plan of Lord Mountbatten was excepted by the congress and the muslim league. The British Parliament enacted the Indian Independence act, 1947 which got Royal assistant on -
  1. A.3 June, 1947
  2. B.4 July, 1947
  3. C.15 July, 1947
  4. D.18 July, 1947
10
Which one of the following relates to transfer of power to the Indians and partition of the country ?
  1. A.Simon Commission
  2. B.Cripps Mission
  3. C.Cabinet Mission Plan
  4. D.The Mountbatten plan
11
In which year Mayor's Courts were introduced in three Presidency Towns in India ?
  1. A.1726
  2. B.1772
  3. C.1774
  4. D.1781
12
On whose recommendation amongst the following the Constituent Assembly was constituted ?
  1. A.Cripps Mission
  2. B.Webel Mission
  3. C.Lord Mountbatten
  4. D.Cabinet Mission Plan
13
Who was the Constitutional Advisor to the Constitutent Assembly ?
  1. A.Dr. B. R. Ambedkar
  2. B.Pt. Jawahar Lal Nehru
  3. C.Sr. B.N. Rau
  4. D.Dr. Rajendra Prasad
14
The first Constituent Assembly Meeting held on 9.12.46 was presided over by -
  1. A.Dr. Rajendra Prasad
  2. B.Shri S.N. Sinha
  3. C.Shri Jawahar Lal Nehru
  4. D.None of the above
15
Who among the following was the President of Constituent Assembly ?
  1. A.Dr. Rajendra Prasad
  2. B.Sardar Patel
  3. C.Dr. Bhimrao Ambedkar
  4. D.Pt. J. Nehru

Current affairs and General Knowledge

1
Yojna a weekly journal
  1. A.Ministry of Finance        
  2. B.Ministry of Information and Broadcastin
  3. C.Ministry of Rural Development
  4. D.Planning Commission
2
Sattriya dance form is famous in which of these states ?
  1. A.Assam
  2. B.Himachal Pradesh
  3. C.Punjab
  4. D.Tamil Nadu
3
Which is the national game of Bhutan ?
  1. A.badminton
  2. B.basketball
  3. C.football
  4. D.archery
4
When was the Constituent Assembly of India formed?
  1. A.1946
  2. B.1947
  3. C.1948
  4. D.1950
5
Who is known as the "Father of the Indian Renaissance" ?
  1. A.Raja Ram Mohan Roy
  2. B.Swami Vivekananda
  3. C.Rabindranath Tagore
  4. D.Mahatma Gandhi
6
What is the study of ethics primarily concerned with ?
  1. A.Economic behavior
  2. B.Human values and moral principles
  3. C.Physical health
  4. D.Political systems
7
Who is known as the "Missile Man of India"?
  1. A.Dr. Homi J. Bhabha
  2. B.Dr. Vikram Sarabhai
  3. C.Dr. APJ Abdul Kalam
  4. D.Dr. Satish Dhawan
8
Which is the longest river in India?
  1. A.Yamuna
  2. B.Ganges
  3. C.Brahmaputra
  4. D.Godavari
9
Who recently won the Bankipur Assembly by-election in Bihar, widening the lead significantly over the BJP candidate?
  1. A.Prashant Kishor
  2. B.Neeraj Kumar Sinha
  3. C.Tejashwi Yadav
  4. D.Nitish Kumar
10
What campaign did Prime Minister Narendra Modi launch to curb drug abuse among youth?
  1. A.Nasha Mukt Yuva
  2. B.Nasha Mukt Bharat
  3. C.Yuva Shakti Abhiyan
  4. D.Drug-Free India Mission
11
The Centre has directed states to set up special courts to clear approximately how many pending NDPS (narcotics) cases?
  1. A.1.5 lakh
  2. B.2.9 lakh
  3. C.3.9 lakh
  4. D.5.2 lakh
12
Which Indian pass saw the resumption of India-China cross-border trade after six years?
  1. A.Nathu La
  2. B.Jelep La
  3. C.Lipulekh
  4. D.Shipki La
13
The Lok Sabha passed a bill to increase the sanctioned strength of Supreme Court judges from 34 to how many?
  1. A.38
  2. B.36
  3. C.40
  4. D.42
14
Who among the following was associated with Enlightenment philosophy?
  1. A.Voltaire
  2. B.Shakespeare
  3. C.Erasmus
  4. D.All of the above
15
When did World War II end?
  1. A.1918
  2. B.1939
  3. C.1946
  4. D.1945

Subject Related Questions (Wireless)

1
Which material has very low electrical resistivity?
  1. A.Rubber
  2. B.Glass
  3. C.Copper
  4. D.Mica
2
Which of the following is a good insulating material?
  1. A.Aluminium
  2. B.Copper
  3. C.Mica
  4. D.Iron
3
Conductivity of semiconductors increases with?
  1. A.Decrease in temperature
  2. B.Increase in temperature
  3. C.No change in temperature
  4. D.Zero temperature
4
Which material is commonly used for making permanent magnets?
  1. A.Soft iron
  2. B.Silicon steel
  3. C.Alnico
  4. D.Copper
5
Which material is used as a core in transformers?
  1. A.Hard steel
  2. B.Soft iron
  3. C.Aluminium
  4. D.Brass
6
Intrinsic semiconductor at absolute zero behaves as?
  1. A.Conductor
  2. B.Insulator
  3. C.Semiconductor
  4. D.Superconductor
7
Which charge carriers are present in P-type semiconductor?
  1. A.Electrons only
  2. B.Holes only
  3. C.Both electrons and holes
  4. D.Ions only
8
Which impurity is added to silicon to make N-type semiconductor?
  1. A.Boron
  2. B.Aluminium
  3. C.Indium
  4. D.Phosphorus
9
The majority charge carriers in N-type semiconductor are?
  1. A.Holes
  2. B.Protons
  3. C.Electrons
  4. D.Neutrons
10
Energy gap of germanium is approximately?
  1. A.0.3 eV
  2. B.0.7 eV
  3. C.1.1 eV
  4. D.2.5 eV
11
A PN junction diode conducts when it is?
  1. A.Reverse biased
  2. B.Forward biased
  3. C.Zero biased
  4. D.Short circuited
12
In forward bias of a PN junction diode, depletion layer?
  1. A.Increases
  2. B.Decreases
  3. C.Remains same
  4. D.Disappears completely
13
Which diode is used as a voltage regulator?
  1. A.Tunnel diode
  2. B.Zener diode
  3. C.Varactor diode
  4. D.LED
14
Breakdown in Zener diode occurs due to?
  1. A.Avalanche effect only
  2. B.Zener effect only
  3. C.Both Zener and avalanche effects
  4. D.Thermal runaway
15
Which diode emits light when forward biased?
  1. A.Photodiode
  2. B.Tunnel diode
  3. C.Zener diode
  4. D.LED
16
Photodiode works mainly in?
  1. A.Forward bias
  2. B.Reverse bias
  3. C.Zero bias
  4. D.Saturation region
17
Which diode is used for high-speed switching?
  1. A.Zener diode
  2. B.Tunnel diode
  3. C.Rectifier diode
  4. D.LED
18
Rectification is the process of converting?
  1. A.AC to DC
  2. B.DC to AC
  3. C.High voltage to low voltage
  4. D.Low voltage to high voltage
19
Efficiency of an ideal full-wave rectifier is approximately?
  1. A.40.6%
  2. B.50%
  3. C.81.2%
  4. D.90%
20
Ripple factor of an ideal full-wave rectifier is?
  1. A.0.482
  2. B.1.21
  3. C.0.215
  4. D.0
21
Which component is used as a filter in power supplies?
  1. A.Resistor
  2. B.Inductor
  3. C.Capacitor
  4. D.Both b and c
22
A transistor has how many terminals?
  1. A.One
  2. B.Two
  3. C.Three
  4. D.Four
23
The three terminals of a BJT are?
  1. A.Gate, Drain, Source
  2. B.Anode, Cathode, Grid
  3. C.Emitter, Base, Collector
  4. D.Source, Base, Drain
24
Which region of transistor is heavily doped?
  1. A.Base
  2. B.Collector
  3. C.Emitter
  4. D.All equally doped
25
In a transistor, base region is?
  1. A.Thick and heavily doped
  2. B.Thin and lightly doped
  3. C.Thick and lightly doped
  4. D.Thin and heavily doped
26
Which transistor configuration has highest voltage gain?
  1. A.Common base
  2. B.Common emitter
  3. C.Common collector
  4. D.Emitter follower
27
Emitter follower is also known as?
  1. A.CE amplifier
  2. B.CB amplifier
  3. C.CC amplifier
  4. D.Differential amplifier
28
Thermal runaway in transistor is due to increase in?
  1. A.Base current
  2. B.Collector current
  3. C.Emitter current
  4. D.Leakage current
29
Which biasing circuit offers best thermal stability?
  1. A.Fixed bias
  2. B.Collector to base bias
  3. C.Voltage divider bias
  4. D.Emitter bias
30
Frequency response of an amplifier shows variation of gain with?
  1. A.Voltage
  2. B.Current
  3. C.Frequency
  4. D.Power
31
The bandwidth of an amplifier is defined between?
  1. A.Two cutoff frequencies
  2. B.Two resonance frequencies
  3. C.Input and output frequencies
  4. D.Maximum frequencies
32
h-parameters are also known as?
  1. A.Z-parameters
  2. B.Y-parameters
  3. C.Hybrid parameters
  4. D.ABCD parameters
33
Which h-parameter represents current gain?
  1. A.h11
  2. B.h12
  3. C.h21
  4. D.h22
34
Regulated power supply provides?
  1. A.Variable output voltage
  2. B.Constant output voltage
  3. C.Pulsating DC
  4. D.AC output
35
Which IC is commonly used as voltage regulator?
  1. A.555
  2. B.741
  3. C.7805
  4. D.4017
36
Negative feedback in amplifiers reduces?
  1. A.Bandwidth
  2. B.Stability
  3. C.Distortion
  4. D.Gain accuracy
37
Oscillators are used to generate?
  1. A.DC voltage
  2. B.Amplified signal
  3. C.AC signal without input
  4. D.Rectified output
38
Which condition is necessary for oscillation?
  1. A.Gain less than one
  2. B.Positive feedback
  3. C.Negative feedback
  4. D.Zero phase shift
39
Power amplifier is mainly used to increase?
  1. A.Voltage
  2. B.Frequency
  3. C.Power
  4. D.Phase
40
Class A power amplifier has efficiency of about?
  1. A.25%
  2. B.30%
  3. C.50%
  4. D.78.5%
41
Which class of amplifier has highest efficiency?
  1. A.Class A
  2. B.Class B
  3. C.Class AB
  4. D.Class C
42
Pulse circuits deal with?
  1. A.Sinusoidal signals
  2. B.Square and rectangular pulses
  3. C.DC signals only
  4. D.Audio frequencies only
43
FET is a?
  1. A.Current controlled device
  2. B.Voltage controlled device
  3. C.Power controlled device
  4. D.Frequency controlled device
44
Input impedance of FET is?
  1. A.Low
  2. B.Medium
  3. C.High
  4. D.Zero
45
Which terminal controls the current in FET?
  1. A.Drain
  2. B.Source
  3. C.Gate
  4. D.Substrate
46
MOSFET stands for?
  1. A.Metal Oxide Semiconductor Field Effect Transistor
  2. B.Magnetic Oxide Semiconductor Field Transistor
  3. C.Metal Oxide Silicon Field Transformer
  4. D.Metal Oxide Semiconductor Frequency Transistor
47
Operational amplifier is an example of?
  1. A.Digital IC
  2. B.Linear IC
  3. C.Power IC
  4. D.Memory IC
48
741 is a commonly used?
  1. A.Voltage regulator
  2. B.Timer IC
  3. C.Operational amplifier
  4. D.Counter IC
49
Which material has highest permeability?
  1. A.Copper
  2. B.Aluminium
  3. C.Soft iron
  4. D.Glass
50
Insulating materials are also called?
  1. A.Conductors
  2. B.Semiconductors
  3. C.Dielectrics
  4. D.Magnets
51
Unit of resistivity is?
  1. A.Ohm
  2. B.Ohm-meter
  3. C.Siemens
  4. D.Volt
52
Which material is commonly used as dielectric in capacitors?
  1. A.Iron
  2. B.Copper
  3. C.Mica
  4. D.Silicon
53
Which semiconductor is most widely used in electronics?
  1. A.Germanium
  2. B.Gallium
  3. C.Silicon
  4. D.Selenium
54
Forbidden energy gap of silicon is approximately?
  1. A.0.3 eV
  2. B.0.7 eV
  3. C.1.1 eV
  4. D.2.5 eV
55
Acceptor impurity creates?
  1. A.Free electrons
  2. B.Holes
  3. C.Neutrons
  4. D.Ions
56
Donor impurity is pentavalent because it has?
  1. A.3 valence electrons
  2. B.4 valence electrons
  3. C.5 valence electrons
  4. D.6 valence electrons
57
Majority carriers in P-type semiconductor are?
  1. A.Electrons
  2. B.Holes
  3. C.Ions
  4. D.Protons
58
Barrier potential of silicon diode is about?
  1. A.0.2 V
  2. B.0.3 V
  3. C.0.7 V
  4. D.1.2 V
59
Reverse bias in PN junction causes?
  1. A.Increase in current
  2. B.Decrease in depletion layer
  3. C.Increase in depletion layer
  4. D.Breakdown always
60
Peak Inverse Voltage is related to?
  1. A.Forward bias
  2. B.Reverse bias
  3. C.Zero bias
  4. D.Breakdown only
61
Which rectifier uses two diodes?
  1. A.Half-wave rectifier
  2. B.Full-wave center-tap rectifier
  3. C.Bridge rectifier
  4. D.Voltage doubler
62
Bridge rectifier uses how many diodes?
  1. A.2
  2. B.3
  3. C.4
  4. D.6
63
Ripple factor of half-wave rectifier is?
  1. A.0.482
  2. B.1.21
  3. C.0.215
  4. D.0.5
64
Which filter gives best smoothing?
  1. A.Capacitor filter
  2. B.Inductor filter
  3. C.LC filter
  4. D.RC filter
65
In transistor, collector region is?
  1. A.Heavily doped
  2. B.Lightly doped
  3. C.Moderately doped
  4. D.Undoped
66
Class A power amplifier has efficiency of about?
  1. A.25%
  2. B.30%
  3. C.50%
  4. D.78.5%
67
In common base configuration, current gain is?
  1. A.Very high
  2. B.Zero
  3. C.Less than unity
  4. D.Infinite
68
Input resistance of common emitter amplifier is?
  1. A.Very high
  2. B.Very low
  3. C.Medium
  4. D.Zero
69
Output resistance of common collector amplifier is?
  1. A.High
  2. B.Medium
  3. C.Low
  4. D.Infinite
70
Thermal stability factor should be?
  1. A.Maximum
  2. B.Zero
  3. C.Minimum
  4. D.Infinite
71
Emitter resistor improves?
  1. A.Gain
  2. B.Thermal stability
  3. C.Frequency response
  4. D.Phase shift
72
Lower cutoff frequency is due to?
  1. A.Junction capacitance
  2. B.Coupling capacitor
  3. C.Transistor action
  4. D.Load resistance
73
Upper cutoff frequency is due to?
  1. A.Coupling capacitor
  2. B.Bypass capacitor
  3. C.Junction capacitance
  4. D.Power supply
74
Midband gain of amplifier is?
  1. A.Minimum
  2. B.Maximum
  3. C.Zero
  4. D.Infinite
75
h11 parameter represents?
  1. A.Output impedance
  2. B.Input impedance
  3. C.Voltage gain
  4. D.Current gain
76
h22 parameter represents?
  1. A.Input impedance
  2. B.Reverse voltage gain
  3. C.Forward current gain
  4. D.Output admittance
77
Voltage regulator maintains constant?
  1. A.Current
  2. B.Frequency
  3. C.Voltage
  4. D.Power
78
Line regulation refers to change in output voltage with?
  1. A.Load
  2. B.Input voltage
  3. C.Temperature
  4. D.Frequency
79
Load regulation refers to change in output voltage with?
  1. A.Load current
  2. B.Input voltage
  3. C.Frequency
  4. D.Temperature
80
Feedback that increases gain is?
  1. A.Negative feedback
  2. B.Positive feedback
  3. C.Voltage feedback
  4. D.Current feedback
81
Barkhausen criterion is related to?
  1. A.Amplifiers
  2. B.Rectifiers
  3. C.Oscillators
  4. D.Regulators
82
RC phase shift oscillator uses?
  1. A.Transformer
  2. B.LC tank
  3. C.RC network
  4. D.Crystal
83
Crystal oscillator uses?
  1. A.LC circuit
  2. B.RC circuit
  3. C.Piezoelectric crystal
  4. D.Transistor only
84
Power amplifier operates mostly in?
  1. A.Cutoff region
  2. B.Saturation region
  3. C.Active region
  4. D.Breakdown region
85
Class B amplifier has conduction angle of?
  1. A.90°
  2. B.180°
  3. C.270°
  4. D.360°
86
Crossover distortion occurs in?
  1. A.Class A
  2. B.Class B
  3. C.Class C
  4. D.Class AB only
87
Pulse width is measured between?
  1. A.Rising edges
  2. B.Falling edges
  3. C.50% amplitude points
  4. D.Peak values
88
Rise time is time taken to rise from?
  1. A.0% to 100%
  2. B.10% to 90%
  3. C.20% to 80%
  4. D.50% to 100%
89
Drain current in FET is controlled by?
  1. A.Drain voltage
  2. B.Source voltage
  3. C.Gate voltage
  4. D.Load resistance
90
JFET operates in?
  1. A.Forward bias only
  2. B.Reverse bias only
  3. C.Both biases
  4. D.Zero bias
91
Pinch-off voltage is related to?
  1. A.BJT
  2. B.Diode
  3. C.JFET
  4. D.Op-amp
92
MOSFET has how many terminals?
  1. A.2
  2. B.3
  3. C.4
  4. D.5
93
Enhancement type MOSFET conducts when?
  1. A.Gate voltage is zero
  2. B.Gate voltage is negative
  3. C.Gate voltage exceeds threshold
  4. D.Drain voltage is zero
94
Op-amp ideally has infinite?
  1. A.Output impedance
  2. B.Input impedance
  3. C.Slew rate
  4. D.Offset voltage
95
Ideal op-amp output impedance is?
  1. A.High
  2. B.Medium
  3. C.Low
  4. D.Infinite
96
555 timer IC is used for?
  1. A.Amplification
  2. B.Regulation
  3. C.Timing and oscillation
  4. D.Rectification
97
Linear ICs operate on?
  1. A.Digital signals
  2. B.Binary signals
  3. C.Analog signals
  4. D.Optical signals
98
Which material is used for making electromagnets?
  1. A.Hard steel
  2. B.Soft iron
  3. C.Copper
  4. D.Aluminium
99
Which property of material opposes flow of current?
  1. A.Conductivity
  2. B.Permittivity
  3. C.Resistivity
  4. D.Permeability
100
Unit of conductivity is?
  1. A.Ohm
  2. B.Ohm-meter
  3. C.Siemens/meter
  4. D.Henry
101
Insulation resistance should be?
  1. A.Low
  2. B.Zero
  3. C.High
  4. D.Negative
102
Valence electrons in silicon are?
  1. A.2
  2. B.3
  3. C.4
  4. D.5
103
At room temperature, intrinsic semiconductor has?
  1. A.Only electrons
  2. B.Only holes
  3. C.Equal electrons and holes
  4. D.No carriers
104
Which impurity is trivalent?
  1. A.Phosphorus
  2. B.Arsenic
  3. C.Boron
  4. D.Antimony
105
Minority carriers in N-type semiconductor are?
  1. A.Electrons
  2. B.Holes
  3. C.Protons
  4. D.Neutrons
106
Depletion region has?
  1. A.Free electrons
  2. B.Free holes
  3. C.Immobile ions
  4. D.Neutral atoms
107
Knee voltage of germanium diode is about?
  1. A.0.1 V
  2. B.0.2 V
  3. C.0.3 V
  4. D.0.7 V
108
Reverse saturation current is due to?
  1. A.Majority carriers
  2. B.Minority carriers
  3. C.Ions
  4. D.Protons
109
Which diode is used in voltage multipliers?
  1. A.Zener diode
  2. B.Tunnel diode
  3. C.Rectifier diode
  4. D.Photodiode
110
Transformer is not used in?
  1. A.Half-wave rectifier
  2. B.Full-wave rectifier
  3. C.Bridge rectifier
  4. D.Voltage regulator IC
111
Capacitor filter is most effective at?
  1. A.Low load resistance
  2. B.High load resistance
  3. C.No load
  4. D.Short circuit
112
Transistor is mainly used as?
  1. A.Rectifier
  2. B.Amplifier and switch
  3. C.Regulator
  4. D.Filter
113
Transistor action requires?
  1. A.Both junctions forward biased
  2. B.Both junctions reverse biased
  3. C.E-B forward and C-B reverse biased
  4. D.E-B reverse and C-B forward biased
114
Collector current is approximately equal to?
  1. A.Base current
  2. B.Emitter current
  3. C.Alpha times emitter current
  4. D.Beta times base current only
115
CE configuration provides?
  1. A.High current gain
  2. B.High voltage gain
  3. C.High power gain
  4. D.All of these
116
Input signal in CE amplifier is applied between?
  1. A.Collector and base
  2. B.Emitter and base
  3. C.Collector and emitter
  4. D.Base and ground
117
Collector resistor affects?
  1. A.Biasing only
  2. B.Gain only
  3. C.Output voltage swing
  4. D.Frequency only
118
Stabilization is required to prevent?
  1. A.Oscillation
  2. B.Distortion
  3. C.Thermal runaway
  4. D.Noise
119
Bypass capacitor is connected across?
  1. A.Collector resistor
  2. B.Base resistor
  3. C.Emitter resistor
  4. D.Load resistor
120
At low frequency, gain decreases due to?
  1. A.Junction capacitance
  2. B.Miller effect
  3. C.Coupling capacitor reactance
  4. D.Transistor cutoff