Question # 1

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

Fire fighters have jet attached to the head of their water pipes in order to

Choose an answer

Increase the mass of water flowing per second

Increase the velocity of water flowing out

Increase the volume of water flowing per second

Avoid wastage of water

The work performed on an object does not depend on

Choose an answer

Force applied

Angle at which force is inclined to the displacement

Initial velocity of the object

Displacement

Terminal velocity is the maximum velocity attained by a spherical droplet when the drag force______the weight of droplet:

Choose an answer

Is smaller than

Is greater than

Becomes equal to

None of these

Distance traveled by a body falling from rest in the first, second and third second is in the ration of

Choose an answer

1 : 2 : 3

1 : 3 : 5

1 : 4 : 9

None of the above

Crystalline solids are in the form of:

Choose an answer

Metals

Ionic Compounds

Ceramics

Both (A) and (B)

All of these

Two electric bulbs of 200 W and 100 W have same voltage. If R₁and R₂be their resistance respectively then

Choose an answer

R₁= 2R₂

R₂= 2R₁

R₂=4R₁

R₁= 4R₂

A simple pendulum consists of a

Choose an answer

small light bob

small heavy bob

big light bob

big heavy bob

An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is:

Choose an answer

100 m/sec

140 m/sec

1960 m/sec

196 m/sec

Direction of motion _______ in circular motion

Choose an answer

Changes off and on

Changes continuously

Does not change

None of them

Each atom in metal crystal:

Choose an answer

Remains fixed

Vibrates about a fixed point

Moves randomly

Rotates about center of a crystal

None of these

When a body moves to and fro motion, this type of motion is called

Choose an answer

translatory motion

circular motion

oscillatory motion

all of them

Waves transport energy

Choose an answer

without transport energy

with matter

both of them

none of them

Work done along a closed path in a gravitational field is:

Choose an answer

Maximum

Minimum

Zero

Unity

While finding the electric intensity at a point between two oppositely charged parallel plates, the Gaussian surface is taken in the form of a hollow:

Choose an answer

Cylinder

Box

Sphere

Circle

Rectangle

The measure of the deformation in a solid when stress is applied to its is called

Choose an answer

elastic constant

young's modulus

strain

elasticity

Frequency of red color as compared to that of violet color is:

Choose an answer

Equal

Smaller

Greater

None of these

Transformer is used to

Choose an answer

Increase alternating current

Increase d.c voltage

Increase & Decrease emf

All answers are right

Semi-conductor elements have atoms with

Choose an answer

2 valence electrons

3 valence electrons

4 valence electrons

5 valence electrons

When the bob of simple pendulum is at mean position, its K.E will be

Choose an answer

maximum

minimum

zero

all of them

The pattern of NaCl particles have a shape which is :

Choose an answer

Cubic

Body centred cubic

Simple cubic

face centred

Both (A) and (C)

Micheal Faraday and joseph Henry belong respectively to:

Choose an answer

USA and England

England and France

England and USA

USA and France

None of these

Boyle's law is applicable in

Choose an answer

Isochoric process

Isothermal process

Isobaric process

Isotonic process

The waves moving from a sitar to a listener in air are

Choose an answer

Longitudinal progressive

Longitudinal stationary

Transverse progressive

Transverse stationary

The state in which ice, water and vapour coexists in equilibrium is called

Choose an answer

zero degree celsius

zero degree fahrenheit

absolute zero

373 K

In which process the condition for the application of Boyle's law on the gas is fulfilled

Choose an answer

isochoric process

adiabatic process

isothermal process

none of them

A particle having the mass of electron and charge of a proton is called a

Choose an answer

photon

position

antiproton

antineutrino

If one of the pipes has a much smaller diameter than the other and are placed horizontally then form both sides of Bernoulli's equation, we can drop the term

Choose an answer

P

1/2 fv²

pgh

none of them

In a moving coil galvanometer, the deflecting couple depends upon

Choose an answer

area of the coil

number of turns of coil

value of magnetic field

all of the above

If the flow is incompressible and the flow is steady then the mass of the fluid through the pipe

Choose an answer

increases

decreases

becomes zero

is conserved

Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as

Choose an answer

waves

beat

interference

resonance

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