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 dimensions of viscosity are:

Question # 2

N s m-2is unit of:

Question # 3

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 # 4

A flowing liquid possess

Question # 5

The value of viscosity of a fluid is dependent on (at constant temperature)

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

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

Question # 8

The velocity of falling raindrops attains limited value because of

Question # 9

A high concentration of red blood cells increases its viscosity from

Question # 10

According to the Bernoulli's theorem the pressure velocity are

Question # 11

During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with

Question # 12

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

Question # 13

In a normal healthy person the value of systolic pressure is

Question # 14

The electrical forces between the molecules of a liquid are

Question # 15

Bernoulli's equation is based upon law of conservation

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 A flowing liquid possess
A. K.E
B. P.E
C. Pressure Energy
D. All
2 A tube tapers from 20 cm diameter to 2 cm, the velocity at first cross-section is 50 ms-1then velocity at second cross-section is
A. 5000 cms-1
B. 500 cms-1
C. 50 cms-1
D. 0.5 cm/s
3 The application of Bernoulli's equation is
A. Torricelli's theorem
B. Venture relation
C. Binomial theorem
D. Both a and b
4 Bernoulli's equation is based upon law of conversation of
A. mass
B. momentum
C. Energy
D. None
5 Where the streamlines are very far apart from each other, the pressure will be
A. low
B. zero
C. high
D. all of them
6 Fluids have three types of energies. The Bernoulli's equation combines those energies.which of the following is one of the three enrgies possessed by a fluid?
A. potential energy
B. pressure energy
C. strain energy
D. (a) and (b) only
7 Blood pressure is measured by the instrument
A. stethoscope
B. sphygmomanometer
C. barometer
D. none of them
8 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
9 When a water droplet falls through air, the net force on it is
A. Net force = drag force - weight
B. Net force = weight - drag force
C. Net force = drag force + weight
D. Net force = weight + drag force
10 Which of the following options states the names of fluids in the order of increasing viscosity?
A. mercury, motor oil, methanol
B. methanol, mercury, motor oil
C. motor oil, mercury, methanol
D. methanol, motor oil, mercury

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