Question # 1

The device in which induced emf is statically induced emf is:

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Transformer

AC generator

Alternator

Dynamo

The induced current in the loop can be Increased by

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Using a stronger magnetic field

Moving the loop faster

Replacing the loop by a coil of many turns

All above

Both A and B

The use of chips in electrons is described in the form of:

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Yellow boxes

Black boxes

Red boxes

White boxes

Orange boxes

A unit cell is smallest basic structure which is:

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One dimensional

Two dimensional

Three dimensional

Four dimensional

None of these

The circuit in which current and voltage are in phase, the power factor is

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zero

1

negative

0.83

Charge on proton is

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1.59 x 10^-9C

1.59 x 10^-7C

-1.59 x 10^-19C

1.59 x 10^-19C

In a three phase a.c generator if the first coil has a phase 0, then the other two coils will have phases

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90° - 120°

20° and 140°

120° and 240°

120° and 140°

The smallest three dimensional basic structure in a crystalline solid is called

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lattice point

crystal lattice

cubic crystal

unit cell

At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is

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Sinusoidal shape with amplitude A/3

Sinusoidal shape with amplitude A/2

Sinusoidal shape with amplitude A

Straight line

The analysis of fluid motion becomes simplified by using

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law of conservation

law of conservation of energy

both of them

none of them

Method "lamp and scale arrangement" used to measure the

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angle of deflection

restoring torque

magnetic field strength

current

Which of the following is not the unit of energy?

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Calorie

Joule

Electron-volt

Watt

The systolic blood pressure comes when

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Vessel collapse

Cutting off the blood flow

None of these

All of these

If the line of action of force passes through the axis of rotation or origin then its torque is

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Maximum

Zero

Negative

Non-zero

Heat energy extracted from inside the Earth in the form of hot water or steam is the

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Biomass

Scalar energy

Geothermal energy

None of these

Time between the normal heart beats is

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8 × 10^-1 sec

_{8 × 10}^-2_sec

8 × 10^-3 sec

None of these

The vector sum of two forces is perpendicular to their vector differences.In that case the forces

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Are equal to each other in magnitude

Are not equal to each other in magnitude

Cannot be predicted

Are equal to each other

One watt-hour is equivalent to

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3.6 x 10³ joule

3.6 x 10^-3 joule

6.3 x 10³ joule

6.3 x 10^-3 joule

If solid sphere and solid cylinder of same mass and density rotate about their own axis,the moment of inertia will be greater for

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Solid sphere

Solid cylinder

Both

Equal both

The angular velocity of a particle rotating in a circular orbit 100 times per minute is

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1.66 rad/s

10.47 rad/s

10.47 deg/s

60 deg/s

When the first condition for equilibrium is satisfied, if means that there is no

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Linear acceleration

Angular acceleration

Both

None of these

Whenever a body moves from one position to another, the change in its position is called

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Motion

Displacement

Distance

None of these

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