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 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:

Question # 2

A water hose with an internal diameter of 20 mm at the outlet discharges 30 kg of water in 60 s. What is water speed at the outlet if density of water is 1000 kg/m3during its steady flow

Question # 3

Machine parts are jammed due to:

Question # 4

The dimensions of viscosity are:

Question # 5

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

Question # 6

Bernoulli's equation is applicable for

Question # 7

Drag force increases if speed of the object moving through the fluid:

Question # 8

When the velocity of a liquid flowing steadily in a tube increases, its pressure?

Question # 9

The smooth or steady stream-line flow is know as

Question # 10

The irregular and unsteady flow of the fluid is called

Question # 11

The value for systolic blood pressure for a normal healthy person is

Question # 12

Blood is an

Question # 13

The terminal velocity of a small size spherical body of radius R moving in a fluid varies as

Question # 14

The body will move with terminal velocity when it acquires

Question # 15

According to the Bernoulli's equation, where the speed of the fluid is high, the pressure will be

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Under normal circumstances, the volume of blood is sufficient to keep the vessels
A. flatted for all times
B. inflated for all times
C. inflated for small times
D. none of them
2 Bernoulli's equation is applicable for
A. turbulent flow
B. streamline flow
C. both (a) and (b)
D. all kinds of flows
3 Internal friction of fluid is called
A. Surface tension
B. Viscosity
C. Resistance
D. Cohesive force
4 According to the equation of continuity, when water falls from the tap, it's speed increases and its cross-sectional area
A. decreases
B. increases
C. becomes zero
D. none of them
5 The study of fluid in motion basically involves law of conservation of:
A. Mass
B. Energy
C. Change
D. Both A and C
6 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
7 The density of blood is nearly equal to that of
A. mercury
B. sodium
C. water
D. honey
8 The smooth or steady streamline flow is known as
A. laminar flow
B. turbulent flow
C. both of them
D. none of them
9 The analysis of fluid motion becomes simplified by using
A. law of conservation
B. law of conservation of energy
C. both of them
D. none of them
10 The law of conservation of energy gives us
A. equation of continuity
B. Bernoulli's theorem
C. both of them
D. none of them

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