Question # 1

To convert galvanometer into ammeter we connect

Choose an answer

small resistance in parallel with galvanometer

small resistance in series with galvanometer

high resistance in series with galvanometer

high resistance in parallel with galvanometer

The resistance of 20 cm long wire is 10Ω. When the length is changed to 40 cm. The new resistance is

Choose an answer

10Ω

20Ω

30Ω

40Ω

The time taken by light to travel from moon to earth is:

Choose an answer

80 sec

500 sec

1.802 X 10⁴sec

Aerophysics

A diode which can turn its current ON and OFF in nono seconds is called:

Choose an answer

LED

Photodiode

An ordinary diode.

Both (A) and (B)

Both (B) and (C)

If 2.2 kilowatt power is transmitted through 1 10 ohm line at 22000 volt, the power loss in the form of heat will be

Choose an answer

0.1 watt

1 watt

10 watt

100 watt

The charge per unit time through any cross-section of a conductor is called

Choose an answer

capacitance

electric power

current

potential difference

If a vector lies in second quadrant, than B_xand B_yare:

Choose an answer

-,+

+,-

+,+

-,-

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

Choose an answer

Thumb

Curled fingers

Middle finger

Arm of right hand

None of these

A device which converts Electrical energy into mechanical energy is called as

Choose an answer

Transformer

Generator

Motor

All of these

Body which falls freely under gravity provides good example of motion under:

Choose an answer

Uniform acceleration

Non-uniform acceleration

Uniform velocity

None of these

Which of the following is scalar quantity?

Choose an answer

Electric potential

Velocity

Momentum

Force

The volume of given mass of a gas will be doubled at atmosphere pressure if the temperature of the gas is changed from 150°C to

Choose an answer

300°C

573°C

600°C

743°C

Transmitting antenna emits

Choose an answer

Magnetic waves

Electric waves

Electromagnetic waves

Sound waves

Which one is not produced by sound waves in air?

Choose an answer

Polarization

Diffraction

Refraction

Reflection

If F=0.04 N and X=4 cm then K=

Choose an answer

1 Nm^-1

2 Nm^-1

3 Nm^-1

4 Nm^-1

A p-n junction is formed when a crystal of silicon is growth in such a way that its one half is doped with trivalent impurity and the other half with a impurity from

Choose an answer

2nd group

fourth group

fifth group

sixth group

Back emf is produced due to

Choose an answer

Self induction

Mutual induction

A.C

Lenz's law

The relation between charge 'Q' and current 'I' is given by

Choose an answer

Q = I/t

Q = It

Q = I²t

Q = I²/t

Amplitude is the displacement of the vibrating body from:

Choose an answer

One extreme position to the other extreme position

Mean position any one extreme position

Both A and B are correct

None of these

Silicon can be obtained from:

Choose an answer

Lead

Uranium

An isotope of oxygen

Sand

A body moving along the circumference of a circle of radius R completes one revolution. The radius of a covered path to the angle subtended at the centre is:

Choose an answer

Radius of the circle

Twice the radius

Thrice the radius

None of these

A 100 Kg car is moving at the speed of 10 m/sec and comes to rest after covering a distance of 50 m. The amount of work done against the friction is:

Choose an answer

+5 X 10¹J

+5 X 10²J

+5 X 10³J

+5 X 10⁴J

On the exaust stroke, the outlet values opens. The residual gases are expelled and piston moves

Choose an answer

outwards

inwards

in either way

none of these

How much time, theα-particle more massive than an electron

Choose an answer

600

7000

5000

15000

Radioactivity is

Choose an answer

self disruptive activity

spontaneous activity

exhibited by all elements under proper conditions

both 'a' and 'b'

In the formula P = N₀KT, N₀denotes:

Choose an answer

Number of molecules per unit per volume

Number of moles

Number of molecules

None of these

The vector is space has:

Choose an answer

One Component

Two Compnents

Three Components

Non of these

A container has a small hole in the bottom. Air can go through this hole,but water cannot. This can be best explained by the statement that

Choose an answer

water contains hydrogen atoms, air does not

water molecules are smaller than molecules in the air

surface tension of the water prevents it from

The substances whose resistance decreases with the increase in temperature these substances have coefficient of

Choose an answer

positive temperature

negative temperature

absolute temperature

zero temperature

When a wave is travels from one place to another, it transfers:

Choose an answer

Matter

Energy

Momentum

Both B and C

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

Choose an answer

Impedance

Inductance

Reactance

Resistance

More Classes

Other Links

Physics ECAT Pre Engineering Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer