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

Question # 2

An object moving through a fluid experiences a retarding force called a

Question # 3

The pressure will be low where the speed of the fluid is

Question # 4

A massive object falls through a fluid:

Question # 5

At high speed, fluid friction _____ and fuel consumption ___,:

Question # 6

The blood pressure of a person

Question # 7

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

Question # 8

Glycerin has viscosity _____ the viscosity of water:

Question # 9

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

Question # 10

Stock's law holds for:

Question # 11

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 # 12

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

Question # 13

During the steady flow, different streamlines

Question # 14

Bernoulli's equation is based upon law of conservation

Question # 15

When a water droplet falling freely through air, the drag force on water droplet increases with th

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Bernoulli's equation is based upon law of conversation
A. Mass
B. Momentum
C. Energy
D. None of these
2 Internal friction of fluid is called
A. Surface tension
B. Viscosity
C. Resistance
D. Cohesive force
3 Stoke;s law is not applicable when the speed of the object moving through a fluid is:
A. Zero
B. Small
C. Large
D. None of these
4 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
5 A flowing liquid possess
A. K.E
B. P.E
C. Pressure Energy
D. All
6 With the increase of temperature viscosity
A. Increase
B. Decrease
C. Remains same
D. Doubles
7 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
8 During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with
A. maximum speed
B. zero speed
C. maximum speed
D. none of them
9 Where the streamlines are very close to each other, the pressure will be
A. low
B. zero
C. high
D. all of them
10 Drag force increases if speed of the object moving through the fluid:
A. Increases
B. Decreases
C. Remains constant
D. None of these

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