Question # 1

Free electrons are

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tightly bound

fixed

loosely bound

tightly fixed

The graphical representation of ohm's law is

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hyperbola

straight line

ellipse

parabola

Which of the following has the greatest coefficient of viscosity?

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water

gasoline

honey

tar

Bernoulli's equation is important in the field of

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Electrical circuit

Magnetism

Photoelectric effect

Flow of fluids

In case of metallic conductors, the charge carriers are

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Protons

Electrons

Antiprotons

Positrons

Both A and B

The value of LDR depends upon intensity of:

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Sound falling on it

Current passing through it

Magnetic field surrounding it

Light falling on it

Non of these

If you are moving at relativistic speed between two points that are a fixed distance apart, then the distance between the two points appers

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larger

shorter

equal

none of these

The ratio of the r.m.s value of the applied voltage to the r.m.s value of resulting a.c. is

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Impedance

Inductance

Reactance

Resistance

For making cooking utensils, which of the following pairs of properties is most suited?

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Low specific heat and high conductivity

Low specific heat and low conductivity

High specific heat and high conductivity

High specific heat and low conductivity

Resistor is a device which convert electric energy to

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Heat energy

Chemical energy

Elastic energy

All of the above

In describing functions of digital systems, a closed switch will be shown as

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0

1

low

any one of these

Which are not the elementary particles?

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Photons

Leptons

Hadrons

Quarks

None of these

The energy stored int he water of the dam is:

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Electric energy

Kinetic energy

Potential energy

None of these

To get a resultant displacement of 10 m, two displacement vectors of magnitude 6 m and 8 m should be combined

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Parallel

Antiparallel

At angle 60°

Perpendicular to each other

Glass is an example of

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crystalline solid

amorphous solid

polymeric solid

none of them

The CRO is used for displaying the waveform of a given

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current

voltage

both of them

none of them

Crystalline solids are in the form of:

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Metals

Ionic Compounds

Ceramics

Both (A) and (B)

All of these

In an A.C circuit with resistor only, the current and voltage have a phase angle of

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90°

0°

180°

none of these

dimensions are the same for:

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Work and energy

Force and weight

None of these

Both a and b

Time period of a simple pendulum depends upon the

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length of the pendulum

acceleration due to gravity

none of them

both of them

Experiments revealed that the ratio of the stress to the strain is a constant value for

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different material

all materials

a given material

all of them

When a constant potential difference is applied across the conductor, the drift velocity of electrons:

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Increases

Decreases

Remains the constant

Either of these

None of these

Work done along a closed path in a gravitational field is:

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Maximum

Minimum

Zero

Unity

In a transistor, the central region is called

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collector

emitter

base

none of them

Every crystalline solid has

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definite melting point

different melting points

may or may not be definite

none of them

The materials in which there are plenty of free electrons for electrical conduction are known as

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conductors

insulators

semi-conductors

all of them

Conventional the angular Velocity is Directed at an angle of:

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90° to the axis of rotation

30° to the axis of rotation

0° to the axis of rotation

None of above

Faraday's law of electromagnetic induction has been used in the construction of:

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Galvanometer

Voltmeter

Electric motor

Electric genrator

Commutator

The temperature at which the speed of sound becomes double as was at 27°C is

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273°C

0°C

927°C

1027°C

The concept of direction and position are purely

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absolute

relative

absolute or relative

none of these

Examples of moderators used in a fission reactor is/are:

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Water

Heavy water

Carbon

Hydrocarbon

All of these

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