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

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 # 2

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

Question # 3

Stoke;s law is not applicable when the speed of the object moving through a fluid is:

Question # 4

The velocity of falling raindrop attains limited value because of

Question # 5

One torr is equal to

Question # 6

Bernoulli's equation is based upon law of conversation

Question # 7

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

Question # 8

Above a certain velocity of a fluid is called

Question # 9

The pressure will change in the pipe, as the fluid moves through that pipe of varying

Question # 10

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

Question # 11

N s m-2is unit of:

Question # 12

The effect of friction between different layers of a flowing fluid is described in terms of

Question # 13

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

Question # 14

Blood vessels can be stretch like rubber, therefore they are

Question # 15

The direction of the streamlines is the same as the direction of the

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 In a normal healthy person the value of systolic pressure is
A. 75 torr
B. 80 torr
C. 120 torr
D. all of them
2 The product of cross-sectional area of the pipe and the fluid speed at any pint along the pipe is
A. very high
B. very low
C. constant
D. zero
3 At low speeds, the drag force is
A. proportional to speed
B. inversely proportional to speed
C. not simply proportional to speed
D. none of them
4 Bernoulli's equation is based upon law of conversation of
A. mass
B. momentum
C. Energy
D. None
5 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
6 A device used to measure the speed of liquid flow is known as
A. barometer
B. speedometer
C. sphygmomanometer
D. venture-meter
7 Fluids resist force, This property is called
A. Stiffness
B. Strength
C. Ductility
D. Elasticity
8 The terminal velocity of a small size spherical body of radius R moving in a fluid varies as
A. R
B. R2
C. 1/R
D. (1/R)2
9 The equation of continuity is
A. A1A2 = V1V2
B. A1/V1 =A2/V2
C. V1/A1=V2/A2
D. A1V1 =A2V2
10 With increase of temperature, the viscosity of liquid and gases
A. Increases for both
B. Decreases for both
C. Increases for liquids and decreases for gases
D. Decreases for liquids and increases for gases

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