ECAT Pre Engineering Physics Chapter 6 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 6 Fluid Dynamics

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 6 Fluid Dynamics

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Physics ECAT Pre Engineering Chapter 6 Fluid Dynamics

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Question # 1

The property of fluids due to which they resist their own flow is called:

Question # 2

The study of fluid in motion basically involves law of conservation of:

Question # 3

In a container having water filled up to a height h, a hole is made in the bottom. The velocity of water flowing out of the hole is

Question # 4

Fluid A is more viscous than fluid B. While flowing through a pipe of the same dimensions and material which fluid takes longer to travel at 25°C?

Question # 5

The application of Bernoulli's equation is

Question # 6

In the case of an incompressible fluid in stead flow the net rate of flow of mass entering one end of the tube of flow is equal to the net rate of flow of mass leaving the other end. This equation is called

Question # 7

In a surface tension experiment with a capillary tube water rises up to 0.1 m. if the same experiment is repeated on an artificial satellite, which is resolving around the earth, water will rise in the capillary tube up to a height of

Question # 8

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

Question # 9

Two water pipes of diameters 4 cm and 8 cm are connected with a supply line. The velocity of flow of water in the pipe 4 cm diameter is

Question # 10

The mass of fluid passing through any cross-section per unit time is called

Question # 11

With increase of temperature, the viscosity of liquid and gases

Question # 12

A tube is tapered from 20 cm diameter to 2 cm diameter, the velocity at the first cross-section is 50 cm/s, then the velocity at the second cross-section is

Question # 13

In a _____ flow, each particle of the fluid is called a streamline and different streamlines ______cross each other.

Question # 14

If v is the velocity of flow of liquid through a tube of area of cross-section A, then according to equation of continuity

Question # 15

Blood pressure is measured by the instrument

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The force exerted by the fluid in a hydraulic pump on the piston is 10 cm2, the fluid pressure on the piston is, in N/cm2
A. 20
B. 200
C. 2000
D. 20,000
2 The direction of the streamlines is the same as the direction of the
A. force
B. torque
C. velocity
D. weight
3 The drag force acting on a spherical droplet of radius 10-5m moving with a velocity of 1 cm/sec in a fluid of velocity 5.31 x 10-7m/sec. The units comes out to be:
A. 10-16N
B. 10-14N
C. 10-12N
D. 10-10N
4 When each particle of the fluid moves along a smoth path, this path is known as
A. straight path
B. smooth path
C. haphazard path
D. steamline
5 0.10 cm can be written as:
A. 1.0 x 10-2m
B. 1.0 x 10-3cm
C. 1.0 x 10-4cm
D. 1. x 10-4m
6 The velocity of falling raindrop attains limited value because of
A. Up trust of air
B. Viscous force exerted by air
C. Surface tension effect
D. Air currents atmosphere
7 The term Brownian movement refers to
A. irregular motions of small particles suspended in a fluid
B. convection currents in a liquid or gas
C. convection currents in a gas but not in a liquid
D. the stretching of a body beyond its elastic limit
8 Rate of flow can be expressed in
A. litre/sec
B. litre-sec
C. sec/litre
D. sec/litre-m
9 In a container having water filled up to a height h, a hole is made in the bottom. The velocity of water flowing out of the hole is
A. Independent of h
B. Proportional to h1/2
C. Proportional to h
D. Proportional to h2
10 Matter is made up of very tiny particles called
A. Atoms
B. Molecules
C. Ions
D. None of these

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