Question # 1

The resistance of an incandescent lamp is

Choose an answer

Smaller when switched on

Greater when switched off

The same whether it is switch off or switch on

Greater when switched on

A metal road of length 1m is moving at a speed of 1 ms^-1In a direction making angle of 30º with 0.5 Y magnetic field. The emf produced in the rod is:

Choose an answer

0.25 N

0.25 V

2.5 V

2.5 N

25 V

During the nuclear changes, the law/s of conservation that hold/s are that of:

Choose an answer

Charge

energy

Momentum

Mass

All of these

The output voltage of half wave rectification is in the form of

Choose an answer

a smooth curve

a smooth wave

pulses

all of the above

In above figures, tell which set of graphs shows that a body is moving with uniform velocity:

Choose an answer

(i) and (ii)

(ii) and (iii)

(iii) and (iv)

In a transistor, if the central region is p-type then this type of transistor is known as

Choose an answer

p-n-p transistor

n-p-n transistor

either of these

none of these

Time period of simple pendulum is independent of

Choose an answer

length

mass

acceleration due to gravity

none of them

The current in microamperes required to produce one millimeter deflection on a scale placed one meter away from the mirror of the galvanometer, defined the sensitivity of

Choose an answer

ammeter

voltmeter

galvanometer

avo-meter

The force which opposes the applied force producing the displacement in the spring is called

Choose an answer

restoring force

periodic force

centripetal force

resistive force

If R is gas constant for 1 gram mole, C_pand C_vare specific heat for a solid then

Choose an answer

C_p- C_v= R

C_p- C_{v < R}

C_p- C_{v = 0}

C_p- C_{v > R}

Calculate the amount of charge flowing in 2 minutes in a wire of resistance 10Ωwhen a potential difference of 20 V is applied between its ends

Choose an answer

120 C

240 C

20 C

4 C

A unit cell is smallest basic structure which is:

Choose an answer

One dimensional

Two dimensional

Three dimensional

Four dimensional

None of these

The nucleus left after the emission of some radiation is called:

Choose an answer

Parent nucleus

Daughter necleus

Mother necleus

Any of these

None of these

The life time of metastable state is equal to

Choose an answer

Life time of excited state

Greater than by excited state

Zero

Less than by excited state

In Bernoulli's theorem the relation between velocity and pressure is

Choose an answer

Inverse

Direct

None of the above

Both a and b

The conventional current in a circuit is defined as " current which passes from a point at higher potential to a point at lower potential as if it represent a movement of

Choose an answer

negative charges

positive charges

protons

electrons

The force applied on unit area to produce any change in the shape, volume or length of a body is known as

Choose an answer

strain

elasticity

stretching

stress

To and fro motion of a body is about its mean position is known as:

Choose an answer

Translatory motion

Vibratory motion

Rotatory motion

None of these

The resultant of two velocities 3 m/sec and 400 cm/sec making an angle 90° with each other is:

Choose an answer

20 m/sec

5 m/sec

3 m.sec

None of these

Substances which break just after the elastic limit is reached, are known as

Choose an answer

brittle substances

ductile substances

plastic substances

elastic substances

The consumption of energy by a 1000 watt heter in half an hour is:

Choose an answer

5 Kwh

0.5 Kwh

2.5 Kwh

3.2 Kwh

The R₁= infinity and R₂= 0, then the gain of non-inverting amplifier is

Choose an answer

zero

infinity

one

any one of these

A certain force gives an acceleration of 2 m/sec2 to a body if mass 5 kg. The same force would give a 29 kg object an acceleration of:

Choose an answer

0.5 m/sec2

5 m/sec2

1.5 m/sec2

9.8 m/sec2

The electric flux through any surface depends upon:

Choose an answer

Intensity of electric field

Area of the surface

Angle between intensity and area

All of these

None of these

The frequency of free vibrations is known as

Choose an answer

free frequency

forced frequency

natural frequency

un-natural frequency

A 1000 Kg car travelling with a speed of 90 km/hr turns around a curve of radius 0.1 km. The necessary centripetal force comes out to be:

Choose an answer

8.1 X 10⁷N

625 N

6250 N

None of these

The SI unit of magnetic permeability is

Choose an answer

WB A^-1m^-1

WB mA^-1

WB Am^-1

None of these

It two waves of amplitude 'a' produce a resultant wave of amplitude a, then the phase difference between them will be

Choose an answer

60°

90°

120°

180°

Energy is not carried by

Choose an answer

Transverse progressive waves

Longitudinal vibration

Stationary waves

Electromagnetic

High speed meteors rushing through air reduces to ashes because of:

Choose an answer

Force of gravity

High resistance of air

Drag force

None of these

Gaussian surface is always:

Choose an answer

Rectangular

Spherical

Cylindrical

Box shape

Any of these

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