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

Bernoulli's equation is applicable for

Question # 2

Bernoulli's equation is the fundamental equation in fluid dynamics, which relates pressure to fluid

Question # 3

Bernoulli's equation is based upon law of conversation of

Question # 4

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 # 5

The SI unit of viscosity is

Question # 6

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

Question # 7

A massive object falls through a fluid:

Question # 8

Bernoulli's equation is based upon law of conversation

Question # 9

The maximum drag force on a falling sphere is 9.8 N, it weight is

Question # 10

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?

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 droplet moves with terminal velocity in a fluid, the net force acting on the droplet is:

Question # 13

In a container having water filled up to a height h, a hole is made in the bottom. The velocity of water flowing out of the hole is

Question # 14

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

Question # 15

According to slok's law, drag force depends on

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 When the droplet moves with terminal velocity in a fluid, the net force acting on the droplet is:
A. FD-mg
B. Zero
C. mg-FD
D. None of these
2 The pressure will be low where the speed of the fluid is
A. Zero
B. High
C. Low
D. Constant
3 Internal friction of fluid is called
A. Surface tension
B. Viscosity
C. Resistance
D. Cohesive force
4 Glycerin has viscosity _____ the viscosity of water:
A. More than
B. Equal to
C. Less than
D. None of these
5 The rain drop falling from the sky reach the ground with
A. Constant terminal velocity
B. Constant gravitational acceleration
C. Variable acceleration
D. acceleration greater than g
6 Bernoulli's equation is based upon law of conversation of
A. mass
B. momentum
C. Energy
D. None
7 A person standing near the track of a fast moving train has tendency to fall towards it because of
A. Vibration due to motion of train
B. Gravitation force of attraction between person and trains
C. The high speed of train
D. Some other effect
8 The value of viscosity of a fluid is dependent on (at constant temperature)
A. the fluid itself
B. the fluid and its container
C. anything in contact with the fluid
D. all of the above
9 The instrument which detects the instant at which external pressure becomes equal to the systolic pressure is
A. stethoscope
B. thermometer
C. manometer
D. barometer
10 With the increase of temperature viscosity
A. Increase
B. Decrease
C. Remains same
D. Doubles

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