Question # 1

Most practical application of electricity involve

Choose an answer

Charges at the rest

Charges in the motion

Electrons at rest

Atoms in motion

Molecules in motion

The transition from solid state to liquid state is:

Choose an answer

Abrupt

Slow

Continous

Discontinous

Both (A) and (D)

Most of the geysers occur in:

Choose an answer

Volcanic regions

Magnetic regions

Northern region

None of these

The field around a moving charge is called

Choose an answer

magnetic field

conservative field

non-conservative field

none of these

A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is

Choose an answer

Charge Q

Potential V

Capacity

Energy U

The best conductor is:

Choose an answer

Silver

Copper

Aluminimum

Both B and C

None of them

Which of the following changes at an antinode in a stationary wave?

Choose an answer

Density only

Pressure only

Both pressure and density

Neither pressure nor density

Semi-conductor elements have atoms with

Choose an answer

2 valence electrons

3 valence electrons

4 valence electrons

5 valence electrons

The induced current is a conductor depends upon:

Choose an answer

Resistance of the loop

Speed with which the conductor moves

Any of these

Both (A) and (B)

None of these

The isotope/s of hydrogen is /are:

Choose an answer

Protium

Deuterium

Tritium

Both (A) and (B)

All of these

When platinum wire is heated, it appears cherry red at

Choose an answer

1600°C

900°C

1100°C

1300°C

The charge carriers in gases are

Choose an answer

electrons

ions

protons

ions and electrons

The three equation of motions are useful only for

Choose an answer

linear motion with increasing acceleration

line motion with uniform acceleration

linear motion with zero acceleration

linear motion with varying acceleration

The highest efficiency of a heat engine whose low temperature is 17°C and the high temperature is 200°C is

Choose an answer

70%

100%

35%

38%

Which of the following theory completely explain the three types of materials

Choose an answer

Bohr model of electron distribution

Rutherford atomic model

Pauli's exclusion principle

energy band theory

The photocopying process is called:

Choose an answer

Geography

Sonography

Xerography

Zerography

None of these

A signal is amplified at the output without any change of phase, if it is applied at the

Choose an answer

inverting input

non-inverting input

at any of the input

none of these

The half lie of radium-226 is

Choose an answer

238 years

4.5 x 10⁹days

1620 years

332 years

If both the inputs given to a gate ae 1 such that the output is 0, then it is:

Choose an answer

AND gate

NOR gate

OR gate

NOT gate

Both (A) and (C)

When a position comes close to an electron they annihilate into photons such that

Choose an answer

each photon has energy 0.51 Me v

each photon has energy 1.02 Me v

each photon has energy 0.25 Me v

none of these

The number of LED'S needed to display all the digits is:

Choose an answer

Four

Five

Nine

Six

Seven

Velocity of sound in vacuum (in m/s) is

Choose an answer

330

1000

156

0

In YDS experiment, fringe spacing means the distance between two consecutive ____fringes.

Choose an answer

Bright

Dark

Any of A and B

None of these

Specific heat at constant pressure is greater than the specific heat at constant volume because

Choose an answer

Heat is used up to increase temperature at constant pressure

Heat is used by gas for expansions purposes at constant pressure

Heat is use dup to increase internal energy

The above statement is invalid

Root out of the conventional source of energy:

Choose an answer

Energy from biomass

Hydroelectric energy

Geothermal energy

None of these

In L.C.R series A.C. circuit, the phase angle between current and voltage is

Choose an answer

Any angle between 0 and +π/2

π/2

π

Any angle between 0 andπ/2

The SI unit of magnetic induction is

Choose an answer

Weber

Weber/meter

Henry

Tesla

The unit of viscosity is SI system is:

Choose an answer

Kg^-1m sec^-1

Kgm^-1 sec^-1

Kg^-1m^-1 sec

None of these

The direction of velocity is along the direction of

Choose an answer

distance

displacement

acceleration

all of them

Which one of the following is dimensionless:

Choose an answer

Acceleration

Velocity

Density

Angle

A flowing liquid possess

Choose an answer

K.E

P.E

Pressure Energy

All

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