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CDOT Technician (Mechanical) Exam - English

Duration: 90 Β· Questions: 100 Β· Max Marks: 100 Β· Language: 1

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Mechanical

1
What is the least count of a Vernier caliper having 20 Vernier scale divisions coinciding with 19 main scale divisions, where 1 main scale division is 1 mm?
  1. A.0.01 mm
  2. B.0.05 mm
  3. C.0.1 mm
  4. D.0.02 mm
2
Which part of a Vernier caliper is used for measuring the depth of a hole?
  1. A.Main scale
  2. B.Vernier scale
  3. C.Jaws
  4. D.Depth bar
3
What is the principle of measurement in a micrometer?
  1. A.Difference in scale divisions
  2. B.Screw and nut mechanism
  3. C.Comparison with a standard
  4. D.Optical magnification
4
What is the least count of a standard metric micrometer?
  1. A.0.1 mm
  2. B.0.02 mm
  3. C.0.01 mm
  4. D.0.05 mm
5
The spindle of a micrometer is attached to which part?
  1. A.Anvil
  2. B.Frame
  3. C.Thimble
  4. D.Sleeve
6
What is the purpose of the ratchet stop in a micrometer?
  1. A.To lock the measurement
  2. B.To provide a constant measuring pressure
  3. C.To rotate the spindle quickly
  4. D.To ensure uniform measuring pressure
7
A wire gauge is used to measure the:
  1. A.Length of a wire
  2. B.Resistance of a wire
  3. C.Diameter of a wire
  4. D.Current carrying capacity of a wire
8
Wire gauges typically measure wire diameter in:
  1. A.Millimeters
  2. B.Inches
  3. C.Standard gauge numbers
  4. D.Micrometers
9
What are slip gauges also known as?
  1. A.Feeler gauges
  2. B.Gauge blocks
  3. C.Radius gauges
  4. D.Thread gauges
10
Slip gauges are made of:
  1. A.Soft steel
  2. B.Aluminum
  3. C.Hardened and ground high-grade steel alloy
  4. D.Brass
11
What is the process of joining slip gauges together for a specific dimension called?
  1. A.Welding
  2. B.Soldering
  3. C.Wringing
  4. D.Clamping
12
The accuracy of slip gauges is typically expressed in terms of:
  1. A.Surface finish
  2. B.Hardness
  3. C.Grade
  4. D.Weight
13
Which of the following measuring instruments has the highest accuracy?
  1. A.Vernier caliper
  2. B.Micrometer
  3. C.Slip gauges
  4. D.Wire gauge
14
What is the main scale division value of a Vernier height gauge if its least count is 0.02 mm and it has 50 Vernier divisions coinciding with 49 main scale divisions?
  1. A.0.5 mm
  2. B.1 mm
  3. C.0.01 mm
  4. D.0.02 mm
15
A feeler gauge is used to measure:
  1. A.External diameters
  2. B.Internal diameters
  3. C.Gaps or clearances between mating parts
  4. D.Thread pitch
16
Feeler gauge blades have specific:
  1. A.Lengths
  2. B.Widths
  3. C.Thicknesses
  4. D.Materials
17
What is a radius gauge used for?
  1. A.Measuring angles
  2. B.Measuring straightness
  3. C.Measuring the radius of curves or fillets
  4. D.Measuring thread radius
18
Radius gauges consist of a set of blades with:
  1. A.Varying lengths
  2. B.Varying widths
  3. C.Different concave and convex radii
  4. D.Different thicknesses
19
What is a thread pitch gauge used for?
  1. A.Measuring the diameter of a thread
  2. B.Measuring the length of a thread
  3. C.Measuring the pitch of a screw thread
  4. D.Measuring the angle of a thread
20
Thread pitch gauges consist of a set of blades with different:
  1. A.Thread depths
  2. B.Thread profiles and pitches
  3. C.Thread angles
  4. D.Thread lengths
21
Which of the following is a direct measuring instrument?
  1. A.Dial gauge
  2. B.Steel rule
  3. C.Comparator
  4. D.Sine bar
22
Which of the following is an indirect measuring instrument?
  1. A.Micrometer
  2. B.Vernier caliper
  3. C.Dial gauge used with a datum surface
  4. D.Wire gauge
23
What is the purpose of a dial gauge?
  1. A.To measure large dimensions accurately
  2. B.To measure small linear displacements or variations
  3. C.To measure angles precisely
  4. D.To measure surface roughness
24
The least count of a dial gauge is typically:
  1. A.1 mm
  2. B.0.1 mm
  3. C.0.01 mm
  4. D.0.001 mm or 0.01 mm (Commonly 0.01 mm, but some are 0.001 mm)
25
What is a comparator used for?
  1. A.Measuring absolute dimensions
  2. B.Comparing the dimensions of a workpiece with a standard
  3. C.Measuring angles accurately
  4. D.Measuring surface finish
26
Which of the following is NOT a type of comparator?
  1. A.Mechanical comparator
  2. B.Optical comparator
  3. C.Electrical comparator
  4. D.Wire gauge
27
What is a sine bar used for?
  1. A.Measuring straightness
  2. B.Measuring flatness
  3. C.Measuring angles accurately
  4. D.Measuring surface roughness
28
A sine bar works on the principle of:
  1. A.Pythagoras theorem
  2. B.Trigonometry
  3. C.Linear interpolation
  4. D.Vernier scale
29
The size of a sine bar is specified by the distance between:
  1. A.Its length and width
  2. B.Its height and width
  3. C.The centers of its rollers
  4. D.Its overall dimensions
30
What is the purpose of a surface roughness measuring instrument?
  1. A.To measure the overall dimensions of a surface
  2. B.To check the flatness of a surface
  3. C.To quantify the texture of a surface
  4. D.To measure the hardness of a surface
31
Which parameter is commonly used to express surface roughness?
  1. A.Roundness
  2. B.Cylindricity
  3. C.Ra (Arithmetic Mean Roughness)
  4. D.Flatness
32
What is the function of a datum in measurement?
  1. A.To magnify the measurement
  2. B.To provide a reference for comparison
  3. C.To provide a fixed reference point or surface for making measurements
  4. D.To increase the accuracy of the instrument
33
In metrology, what does the term "precision" refer to?
  1. A.The closeness of a measurement to the true value
  2. B.The repeatability of a measurement
  3. C.The ability of an instrument to measure small changes
  4. D.The simplicity of using the instrument
34
In metrology, what does the term "accuracy" refer to?
  1. A.The repeatability of a measurement
  2. B.The resolution of the instrument
  3. C.The closeness of a measurement to the true value
  4. D.The speed of measurement
35
What is the difference between tolerance and allowance?
  1. A.Tolerance is the maximum permissible error, and allowance is the actual error.
  2. B.Allowance is the total permissible variation in size, and tolerance is the intended difference between mating parts.
  3. C.Tolerance is the total permissible variation in size, and allowance is the intentional difference between the maximum material limits of mating parts.
  4. D.There is no difference between tolerance and allowance.
36
What is a limit gauge used for?
  1. A.Measuring the exact size of a part
  2. B.Checking whether a part's dimension lies within specified limits
  3. C.Measuring angles
  4. D.Measuring surface finish
37
Which of the following is a type of limit gauge?
  1. A.Vernier caliper
  2. B.Micrometer
  3. C.Go/No-Go gauge
  4. D.Dial indicator
38
What does the "Go" end of a Go/No-Go gauge check?
  1. A.The maximum permissible size of a hole
  2. B.The maximum material condition (MMC) of a feature
  3. C.The minimum material condition (LMC) of a feature
  4. D.The average size of a feature
39
What does the "No-Go" end of a Go/No-Go gauge check?
  1. A.The maximum permissible size of a shaft
  2. B.The maximum material condition (MMC) of a feature
  3. C.The minimum material condition (LMC) of a feature
  4. D.The average size of a feature
40
What is the principle behind optical measurement systems?
  1. A.Mechanical leverage
  2. B.Electrical resistance
  3. C.Light wave properties
  4. D.Fluid pressure
41
Which of the following is an example of an optical measuring instrument?
  1. A.Vernier bevel protractor
  2. B.Slip gauge set
  3. C.Toolmaker's microscope
  4. D.Feeler gauge set
42
A toolmaker's microscope is primarily used for:
  1. A.Measuring large workpieces
  2. B.Measuring surface roughness
  3. C.Precise measurement of small features and dimensions
  4. D.Measuring hardness of materials
43
What is the function of a bevel protractor?
  1. A.Measuring linear dimensions
  2. B.Measuring angles
  3. C.Measuring surface finish
  4. D.Measuring thread pitch
44
What is the least count of a standard Vernier bevel protractor?
  1. A.1 degree
  2. B.5 minutes
  3. C.1 minute
  4. D.0.1 degree
45
What is a coordinate measuring machine (CMM)?
  1. A.A machine for cutting materials to precise dimensions
  2. B.A machine used to measure the physical geometrical characteristics of an object
  3. C.A machine for testing the strength of materials
  4. D.A machine for assembling electronic components
46
CMMs typically use a probe to:
  1. A.Hold the workpiece
  2. B.Apply cutting forces
  3. C.Sense points on the surface of the workpiece
  4. D.Illuminate the workpiece
47
What is the purpose of calibration of measuring instruments?
  1. A.To make the instrument cheaper
  2. B.To make the instrument easier to use
  3. C.To ensure the instrument provides accurate readings by comparing it to a known standard
  4. D.To increase the size of the instrument
48
How often should measuring instruments be calibrated?
  1. A.Only when they show errors
  2. B.Once a year
  3. C.At regular intervals specified by standards or the manufacturer
  4. D.Every time before use
49
What is traceability in measurement?
  1. A.The ability to easily move the measuring instrument
  2. B.The record of who used the measuring instrument
  3. C.The property of a measurement result whereby it can be related to a reference through a documented unbroken chain of calibrations 1
  4. D.The ability to measure very small dimensions
50
What is the unit of measurement for length in the SI system?
  1. A.Inch
  2. B.Foot
  3. C.Meter
  4. D.Centimeter

General Aptitude Test

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
Kurukshetra a journal on rural development is published by
  1. A.Ministry of Finance 
  2. B.Ministry of Information and Broadcastin
  3. C.Ministry of Rural Development
  4. D.Planning Commission
3
Devaluation of a currency means
  1. A.Fixing the value of the currency in conjuction with the movement in the value of a basket of predetermined currencies
  2. B.Reduction in the value of a currency vis-à-vis major internationally traded currencies
  3. C.Fixing the value of currency in multilateral consultaion with the IMF the World Bank and major trading partners
  4. D.Permitting the currency to seek its worth in the international market
4
I go to Madurai by —– Vaigai Express
  1. A.a
  2. B.an
  3. C.some
  4. D.the
5
Have the car stolen!
  1. A.Steal the car
  2. B.You should have the stolen car
  3. C.Get someone to steal the car
  4. D.They have stolen the car
6
The payment was collected by the hardworking salesman.
  1. A.The hardworking salesman collected the payment.
  2. B.the salesman who worked heard was able to collect the payment.
  3. C.to collect the payment the salesman had to work hard.
  4. D.The hardworking salesman was able to collect the payment.
7
I had to stop all my work to complete this project.
  1. A.All other work had to be stopped to complete this project by me
  2. B.For completing this project all other work must be stopped
  3. C.For completing this project I had to stop all my work
  4. D.To complete this project all other work had been stopped by me
8
The Finance Department has ……………a centralized online databank system for all statutory government bodies to …………an eye on their assets and liabilities.
  1. A. presented , stay
  2. B.introduced , keep
  3. C.announce , make
  4. D.created , let
  5. E.proclaimed , hold
9
Assets
  1. A.liabilities
  2. B.responsibilities
  3. C.estates
  4. D.profits
10
Affidavit
  1. A. Affirmation
  2. B.Slander
  3. C.Oath
  4. D.Testimony
11
Hollow
  1. A.Alveolate
  2. B.Cleft
  3. C. Cavernous
  4. D.Solid
12
Cosset 
  1. A.Ignoreb
  2. B.Close
  3. C.Caress
  4. D.Fondle
13
Ogle
  1. A.Leer
  2. B.Gaze
  3. C.Ignore
  4. D.Gawk
14
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
15
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
16
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
17
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
18
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
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 second from the right ?
  1. A.AND
  2. B.FOR
  3. C.THE
  4. D.BIG
  5. E.SUM
20
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
21
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
22
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
23
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
24
The elements of the set {x : x is an integer, x2 : 4} can be represent as .....Z..... . Here, Z refers to
  1. A.{–2, 2} 
  2. B.{–1, 0, 1}
  3. C.{–2, –1, 0, 1, 2}
  4. D.{0, 1, 2}
25
  1. D.None of these
26
If Y = {x : x is a positive factor of the number 2p – 1(2p – 1), where 2p – 1 is a prime number}, then Y can be represent in roster form as
  1. A.{2}
  2. B.{1, 2}  
  3. C.{1, 2, 22, ....., 2p – 1}
  4. D.{1, 2, 22, 23,.... 2p – 1, (2p – 1)}
27
The set {x : x is a positive integer less than 6 and 3x – 1 is an even number} in roster form is
  1. A.{1, 2, 3, 4, 5}
  2. B.{1, 2, 3, 4, 5, 6}  
  3. C.{2, 4, 6}
  4. D.{1, 3, 5}
28
If A B and A B, then
  1. A.A is called a proper subset of B
  2. B.A is called a super set of B
  3. C.A is not a subset of B 
  4. D.B is a subset of A
29
The number of non-empty subsets of the set{1, 2, 3, 4} is
  1. A.15
  2. B.14
  3. C.16
  4. D.17
30
The number of elements of the power set of a set containing m elements is
  1. A.2m – 1
  2. B.m 
  3. C.m2
  4. D.2m
31
If A = {x : x = n2, n = 1, 2, 3}, then number of proper subsets is
  1. A.3
  2. B.8
  3. C.7
  4. D.None of these
32
If A = {x : x = 4n + 1, 2 £ n £ 5},then number of subsets of A is
  1. A.16
  2. B.15  
  3. C.4 
  4. D.None of these 
33
Let A and B be two non-empty subsets of a set X such that A is not a subset of B, then
  1. A.A is always a subset of the complement of B
  2. B.B is always a subset of A  
  3. C.A and B are always disjoint
  4. D.A and the complement of B are always non-disjoint  
34
Sattriya dance form is famous in which of these states ?
  1. A.Assam
  2. B.Himachal Pradesh
  3. C.Punjab
  4. D.Tamil Nadu
35

"Who said, 'India was a parrot unto itself'?

  1. A.Malik Muhammad Joyce
  2. B.Raskhan
  3. C.Rich Khusrow
  4. D.Rich Hasan
36
Which is the national game of Bhutan ?
  1. A.badminton
  2. B.basketball
  3. C.football
  4. D.archery
37
When was the Constituent Assembly of India formed?
  1. A.1946
  2. B.1947
  3. C.1948
  4. D.1950
38
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
39
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
40
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
41
Which city hosted the launch of Capital Radio in 1973?
  1. A.Manchester
  2. B.London
  3. C.Birmingham
  4. D.Glasgow
42
Which ministry launched the Green Hydrogen Certification Scheme of India (GHCI)?
  1. A.Ministry of Power
  2. B.Ministry of Petroleum and Natural Gas
  3. C.Ministry of New and Renewable Energy
  4. D.Ministry of Environment, Forest and Climate Change
43
Who publishes the Special 301 Report?
  1. A.World Trade Organization (WTO)
  2. B.World Intellectual Property Organization (WIPO)
  3. C.United States Trade Representative (USTR)
  4. D.International Trade Commission (ITC)
44
Which startup tested its green propulsion system, VYOM 2U, aboard ISRO’s PSLV C60?
  1. A.Skyroot Aerospace
  2. B.Manastu Space
  3. C.AgniKul Cosmos
  4. D.Pixxel
45
Where was the 24th Rashtriya Vanvasi Krida Pratiyogita held?
  1. A.Bhopal
  2. B.Raipur
  3. C.Ranchi
  4. D.Bhubaneswar
46
Which institute's startup developed the VYOM 2U green propulsion system?
  1. A.IIT Roorkee
  2. B.IIT Madras
  3. C.IIT Bombay
  4. D.IIT Kanpur
47
Which country recently signed agreements with India for green hydrogen derivatives?
  1. A.Japan
  2. B.Singapore
  3. C.Both
48
What is the purpose of the Green Hydrogen Certification Scheme (GHCI)?
  1. A.To subsidize hydrogen fuel
  2. B.To certify hydrogen produced using renewable energy
  3. C.To ban non-renewable hydrogen production
  4. D.To promote fossil fuel usage
49
Which Indian state hosted the 24th Rashtriya Vanvasi Krida Pratiyogita?
  1. A.Chhattisgarh
  2. B.Jharkhand
  3. C.Odisha
  4. D.Madhya Pradesh
50
What is the significance of the Special 301 Report for India?
  1. A.Highlights India's technological advancements
  2. B.Places India on the 'priority watch' list for IP rights
  3. C.Recognizes India's environmental policies
  4. D.None of the above
Question for C-DOT Technician 2026 - Quiz / Questions / MCQ - Toppersexam