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 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

Question # 2

High speed meteors rushing through air reduces to ashes because of:

Question # 3

In a surface tension experiment with a capillary tube water rises up to 0.1 m. if the same experiment is repeated on an artificial satellite, which is resolving around the earth, water will rise in the capillary tube up to a height of

Question # 4

The flow of an ideal fluid is

Question # 5

Bernoulli's equation is based upon law of conservation

Question # 6

The application of Bernoulli's equation is

Question # 7

Glycerin has viscosity _____ the viscosity of water:

Question # 8

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

Question # 9

The SI unit of viscosity is

Question # 10

If one of the pipes has a much smaller diameter than the other and are placed horizontally then form both sides of Bernoulli's equation, we can drop the term

Question # 11

If the flow is incompressible and the flow is steady then the mass of the fluid through the pipe

Question # 12

According to the equation of continuity, when water falls from the tap, it's speed increases and its cross-sectional area

Question # 13

Fire fighters have jet attached to the head of their water pipes in order to

Question # 14

Blood pressure is measured by the instrument

Question # 15

Fog droplets are suspended in air when their weight is balanced by:

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Matter is made up of very tiny particles called
A. Atoms
B. Molecules
C. Ions
D. None of these
2 At high altitude the blood oozes out of the nose and ear because
A. The blood pressure increase at high altitudes
B. The percentage of oxygen in the air increase
C. The atmospheric pressure decrease there
D. The density of blood decrease at high altitudes
3 The electrical forces between the molecules of a liquid are
A. Repulsive
B. Attractive
C. Both A and B
D. None
4 When the upward drag force of the fluid becomes equal to downward force of gravity of the droplet, then its velocity:
A. Starts increasing
B. Starts decreasing
C. Becomes constant
D. Is called escape velocity
5 0.10 cm can be written as:
A. 1.0 x 10-2m
B. 1.0 x 10-3cm
C. 1.0 x 10-4cm
D. 1. x 10-4m
6 If every particle of the flow that passes a particular point, moves along the same path as followed by particles which passed the point earlier, then this flow is said to be
A. turbulent
B. streamline
C. abrupt
D. none of them
7 Stock's law holds for:
A. Motion through free space
B. Motion through viscous medium
C. Bodies of all shapes
D. None of these
8 The body will move with terminal velocity when it acquires
A. minimum speed
B. zero speed
C. maximum speed
D. none of them
9 If v is the velocity of flow of liquid through a tube of area of cross-section A, then according to equation of continuity
A. v/A = constant
B. A/v = constant
C. Av = constant
D. None
10 One torr is equal to
A. 13.33 N/m2
B. 760 N/m2
C. 760 mm Hg
D. 133.3 N/m2

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