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

According to slok's law, drag force depends on

Question # 2

Bernoulli's equation is based upon law of conversation

Question # 3

When the speed of a body in a fluid increases then the drag force

Question # 4

The flow of an ideal fluid is

Question # 5

A container has a small hole in the bottom. Air can go through this hole,but water cannot. This can be best explained by the statement that

Question # 6

Two copper balls of 1 cm and 2 cm in diameter are simultaneously dropped in the same viscous medium. The terminal velocity of bigger ball is:

Question # 7

Density of fluid is defined as:

Question # 8

At the starting point of the free fall motion of an object, its acceleration will be

Question # 9

The body will move with terminal velocity when it acquires

Question # 10

The _____ viscous the medium is _____, is the value of terminal velocity of the droplet:

Question # 11

Viscosity of water is ______ that of air but ___ that of plasma.

Question # 12

The smooth or steady stream-line flow is know as

Question # 13

The product of cross-sectional area of the pipe and the fluid speed at any pint along the pipe is

Question # 14

N s m-2is unit of:

Question # 15

Blood pressure is measured in torr. Which of the following units could belong to torr?

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ECAT Chapter 6 Important MCQ's

Sr.# Question Answer
1 The body will move with terminal velocity when it acquires
A. minimum speed
B. zero speed
C. maximum speed
D. none of them
2 The internal pressure of the blood is
A. less than the external atmospheric pressure
B. greater than the external atmospheric pressure
C. equal to the external atmosphericpressure
D. none of them
3 Drag force increases if speed of the object moving through the fluid:
A. Increases
B. Decreases
C. Remains constant
D. None of these
4 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
A. 1.3 m/s
B. 1.6 m/s
C. 1.9 m/s
D. 2.2 m/s
5 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
A. 1/4 times
B. 4 times
C. Twice
D. 1/2 of 8 cm diameter pipe
6 The velocity of falling raindrops attains limited value because of
A. Up thrust of air
B. Air currents of the earth atmosphere
C. Surface tension effect
D. Viscous force exerted by air
7 The direction of the streamlines is the same as the direction of the
A. force
B. torque
C. velocity
D. weight
8 The velocity gained by the fluid in falling through the distance (h1 - h2) under the action of gravity is equal to the speed of the action of gravity is equal to the speed of the
A. orifices
B. efflux
C. fluid
D. none of them
9 The body passing a viscous medium affected by:
A. One force only
B. Two forces only
C. Four forces
D. None of these
10 Bernoulli's equation is based upon law of conversation
A. Mass
B. Momentum
C. Energy
D. None of these

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