Question # 1

Swimming becomes possible because of______law of motion:

Choose an answer

First

Second

Third

None of these

A body is executing free vibrations when it oscilates

Choose an answer

with the interference of an external force

without the interference of an external force

with the interference of an internal force

none of them

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

Choose an answer

zero

infinity

one

any one of these

Thermocouple is an arrangement of two different metals

Choose an answer

To convert heat energy in to electrical energy

To produce more heat

To convert heat energy into chemical energy

To convert electric energy in to heat energy

In the text book, the transistor amplifier circuit is a:

Choose an answer

Common emitter circuit

Common collector circuit

Common base circuit

Any of these

None of these

Good absorbers of heat are

Choose an answer

Poor emitters

Non emitters

Good emitters

Highly polarized

On a cold morning a metal surface will fell colder to touch than a wooden surface, because

Choose an answer

Metal has high specific heat

Metal has high thermal conductivity

Metal has low specific heat

Metal has low thermal conductivity

Fluids can transmit:

Choose an answer

Transverse wave

Compressional wave

Both of them

None of them

When a stress changes length, it is called the

Choose an answer

compressional stress

tensile stress

shear stress

any one of them

The amplitude of oscillation of each atom in a metallic crystal rises with the

Choose an answer

rise in temperature

decrease in temperature

even temperature remains constant

all of them

The fractional change in resistance per kelvin is known as

Choose an answer

temperature coefficient

resistance coefficient

super temperature

critical temperature

Velocity is a

Choose an answer

scalar quantity

vector quantity

constant quantity

none of them

The vertical and horizontal range will be equal id angle of projection is

Choose an answer

76°

45°

60°

120°

To make an LED, it is impreacticable to use:

Choose an answer

Silicon

Gallium arsenide

Gallium arsenide phosphide

Iron

Both (B) and (C)

the symbol to be used in relativity problems denotes:

Choose an answer

Dilated time

Proper time

Life time

Half time

None of these

Motional emf is called motional:

Choose an answer

Electromagnetic force and is measured in newtons

Electromotive force and is measured in volt

Electromotive force and is measured in newtons

Electromagnetic force and is measured in volts

None of these

When transistors are used in digital circuits they usually operate in the

Choose an answer

Active region

Breakdown region

Saturation and cutoff regions

Linear region

An eV is unit of:

Choose an answer

Potential

Energy

Work

Power

Both (B) and(C)

A diode characteristic curve is a plot between

Choose an answer

current and time

voltage and time

voltage and current

forward voltage and reversed voltage

When a nucleus emits an alpha particles, its charge number decreases by

Choose an answer

3

2

6

5

According to the Bernoulli's theorem the pressure velocity are

Choose an answer

equal to each other

proportional to each other

inversely proportional to each other

none of them

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

Choose an answer

90°

0°

180°

none of these

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 SI unit of current is

Choose an answer

watt

coulomb

volt

ampere

Improper biasing of a transistor circuit produces

Choose an answer

Heavy loading of emitter current

Distortion in the output signal

Excessive heat at collector terminal

Faulty location of load line

A reversible cycle is the one in which

Choose an answer

some of the changes are reversible

all of the changes are reversible

all of the changes are irreversible

none of them

If m means mass of gases objected per second from a rocket and v shows the change in velocity, than mv is named as:

Choose an answer

Force

Energy

work

impulse

Resistance of a conductor depends upon

Choose an answer

the quantity of current passing through it

the voltage applied between its end

its dimensions, physical state and nature of its material

all of the above

During each cycle, alternating voltage reaches a peak value

Choose an answer

One time

Two times

Four times

A number of times depending on the frequency

When the emitter-base junction of a transistor is reverse biased, collector current

Choose an answer

Reverses

Increases

Decreases

Stops

The rate at which the free electrons pass through any section of a metallic wire from right to left is:

Choose an answer

Greater than the speed at which they pass from left to right

Less than the speed at which they pass from left to right

The same speed at which they pass from left to right

Any of above

None of them

More Classes

Other Links

ECAT Physics 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