In a certain code EXPERT is written as $Z%$Q5 and PETROL is written as %$5Q#9. How will 'EXPLORE' be writ n in that code?

Sunil walks towards the East from point A, turns right at point B and walks the same distance as he walked towards the East. He now turns left, walks the same distance again and finally makes a left turn and stops at point C after walking the same distance. The distance between A and C is how many times as that of A and B?

In a certain code 'BACK' is written as '5914' and 'KITE' is written as '4876'. How is 'BEAT' written in that code?

West : North - East :: South : ?

How many meaningful English words can be made with the letters ALEP using each letter only once in each word?

Four of the following, five are alike in a certain way and so form a group. Which is the one that does not belong to that group?

In a certain code language, 'go and come' is written as 'na ta ka' and 'black and white' is written as 'pa ma ta'. How is 'go' written in that code language?

How many such pairs of letters are there in the word CHANNEL each of which has as many letters between them in the word as in the English alphabet?

How many meaningful English words can be made with the letters ATLE using each letter only once in each word?

In a certain code GROWN is written as 7 @ % 36 and NAME written as 64 $ How is GEAR written in that code ?

Assuming both the voltage sources are in phase, the value of R for which maximum power is transferred from circuit A to circuit B is

For the intrinsic gallium-arsenide, the conductivity at room temperature 25°C is 10^-6 (ohm-m)^-1, the electron and hole nobilities are 0.85 m²/V-s and 0.04 m²/V-s respectively. What is the intrinsic carrier concentration at the room temperature?

The resistivity of intrinsic germanium at 30°C is 0.46 –m. What is the intrinsic carrier density at 30°C if the electron mobility is 0.38 m²/V-s and the hole mobility is 0.18 m²/V-s?

Heat conduction in a semiconductor takes place

Brewster angle is the angle when a wave is incident on the surface of a perfect dielectric at which there is no reflected wave and the incident wave is

An electrical breakdown of a p-n junction occurs if

The chief deterrent to the widespread application of superconducting materials is

Which one of the following properties is not observed in the carbon nanotubes ?

The evidence for the importance of electron-phonon interaction in super-conductors comes from

Which one of the following materials is used for cable insulation ?

At temperature of 298 Kelvin, Silicon is not suitable for most-electronic applications, due to small amount of conductivity. This can be altered by

By doping Germanium with Gallium, the types of semi-conductors formed are
1. N type
2. P type
3. Intrinsic
4. Extrinsic

An n-type of silicon can be formed by adding impurity of:
1. Phosphorous
2. Arsenic
3. Boron
4. Aluminum 
Which of the above are correct ?

According to Einstein’s relationship for a semiconductor, the ratio of diffusion constant to the mobility of the charge carriers is

Swept-out voltage in PIN diode happens when PIN diode is

The number of holes in an N-type silicon with intrinsic value 1.5 × 10¹⁰/cm³ and doping concentration of 10¹⁷/cm³, by using mass-action law is

A tunnel-diode is best suited for

Small recovery time of a diode is most significant for

In JFET, when operated above the pinch-off voltage, the

Thermal runaway is not possible in FET because, as the temperature of FET increases

A fin will be more effective when Bio number is

A tank of length, breadth and height in the ratio of 2:1:2 is full of water. The ratio of hydrostatic force at the bottom to that at any larger vertical surface is

Which of the following fluids exhibit a certain shear stress at zero shear strain rate followed by a straight line relationship between shear stress and shear strain rate?

What is the specific gravity of a marble stone, which weighs 400N in air, and 200N in water? (g=10m/s²)

What is the intensity of pressure in the following SI units, when specific gravity of mercury is 13.6 and the intensity of pressure is 400KPa ?

Consider the following statements:
1.If a small upward displacement is given to a floating body, it results in the reduction of the buoyant force acting on the body
2.A slight horizontal displacement does not change either the magnitude or the location of the buoyant force 
Which of the above statements is/are correct? 

State whether following flow field is physically possible? 

In a differential manometer, a head of 0.5 m of fluid A in limb 1 is found to balance a head of 0.3 m of fluid B in limb 2. The atmospheric pressure is 760 mm of mercury. The ratio of specific gravities of A to B is

On which of the following just in time manufacturing philosophy emphasizes ?

The waves produced by a motorboat sailing in water are :

A student measures the distance traversed in free fall of a body, initially at rest in a given time. He uses this data to estimate g; the acceleration due to gravity. If the maximum percentage errors in measurement of the distance and the time are e¹ and e² respectively the percentage error in the estimation of g is

Which of the following logic gates Is an univ eNal gate ?

A ray of light is incident on a 60° prism at the minimum deviation position. The angle of refraction at the first face (ie, incident face) of the prism is

     For transistor action
    (1) Base, emitter and collector regions should have similar size and doping concentrations.
    (2) The base region must be very thin and lightly doped.
    (3) The emitter-base junction is forward biased and base-collector junction is reverse biased.
    (4) Both the emitter-base junction as well as the base collector junction are forward biased.
    Which one of the following pairs of statements is correct?

The velocity with which a projectile must be fired so that it escapes earth’s gravitation does not depend on :

The amount of heat measured in calories needed to raise the temperature of 1 gram of substance by 1 degree centigrade is known as

A closely wound solenoid of 2000 turns and area of cross-section 1.5 × 10^–4 m² carries a current of 2.0 A. It is suspended through its centre and perpendicular to its length, allowing it to turn in a horizontal plane in a uniform magnetic field 5 × 10^–2 T making an angle of 30° with the axis of the solenoid. The torque on the solenoid will be

A particle having a mass of 10^–2 kg carries a charge of 5 × 10^–6 C. The particle is given an initial horizontal velocity of 105 ms^–1 in the presence of electric field  and magnetic field . To keep the particle moving in a horizontal direction, it is necessary that
    (1)  should be perpendicular to the direction of velocity and  should be along the direction of velocity.
    (2) Both  and  should be along the direction of velocity.
    (3) Both  and  are mutually perpendicular and perpendicular to the direction of velocity.
    (4)  should be along the direction of velocity and  should be perpendicular to the direction of velocity.
    Which one of the following pairs of statements is possible?

The physical quantity which has the dimensional formula M1T - Is

The solid cylinder and a hollow cylinder, both of the same mass and same external diameter are released from the same height at the same time on a inclined plane. Both roll down without slipping. Which one will reach the bottom first?

(1) Centre of gravity (CG) of a body is the point at which the weight of the body acts.
(2) Centre of mass coincides with the centre of gravity if the earth is assumed to have infinitely large radius.
(3) To evaluate the gravitational field intensity due to any body at an external point, the entire mass of the body can be considered to be concentrated at its CG.
(4) The radius of gyration of any body rotating about an axis is the length of the perpendicular dropped from the CG of the body to the axis.
    Which one of the following pairs of statements is correct?

The momentum of a body Increases by 20%. What is the percentage increase. In Its kinetic energy ?

For the construction of nuclear-bomb, which of the following substance are taken?

Energy obtained when 1 g mass is completelyconverted into energy is  

Among the elements Ca, Mg, P and Cl, the order of increasing atomic radii is Mg 

The pressure exerted by 6.0 g of methane gas in a 0.03 m³ vessel at 129° C is (Atomic masses : C = 12.01, H = 1.01 and R –8.314 JK^–1 mol^–1) 

Among the following four compounds 
A. Phenol                  
B. Methyl pheno
C. meta-nitrophenol     
D. para nitrophenol the acidity order is

Among the following which one has the highest cation to anion size ratio?

Three moles of an ideal gas expanded spontaneously into vacuum. The work done will be

Consider the following relations for emf of a electrochemical cell
(A) Emf of cell = (oxidation potential of anode) – (reduction potential of cathode)
(B) Emf of cell = (oxidation potential of anode) + (reduction potential of cathode)
(C) Emf of cell = (reduction potential of anode) + (reduction potential of cathode)
(D) Emf of cell = (oxidation potential anode) –  (Oxidation potential of cathode)
Which of the above relations are correct?

 Match List I (substances) with List II (processe employe in the manufacture of the substances) and select the correct option.
  List I                                  List II  
 (Substances)                   (Processes)
 A.Sulphuric acid         1. Haber’s process
 B.Steel                      2. Bessemer’s  process
 C.Sodium                  3. Leblanc process hydroxide    
 D.Ammonia               4. Contact process

When glycerol is treated with excess of HI, it produces

Some statements about heavy water are given below
    (A) Heavy water is used as moderator in nuclear reactors.
    (B) Heavy water is more associated than ordinary water.
    (C) Heavy water is more effective solvent than ordinary water.
 Which of the above statements are correct?

Which of the following oxidation states is the most common among the lanthanoids?

Fructose reduces Tollen’s reagent due to

A compound has an empirical formula CH₂O . If its vapour dencity is 45, is molecular formula is 

At STP, the dencity of a gas (molecular weight 45) is