Question 1

Absolute pressure is equal to

Accepted Answer

Atmospheric pressure +gauge pressure

Answer

Atmospheric pressure / gauge pressure

Answer

Vacuum  pressure +gauge pressure

Answer

Atmospheric pressure x gauge pressure

Question 2

Atmospheric pressure is equal to water column head of

Accepted Answer

10.3m

Answer

8.3m

Answer

9.31m

Answer

11.3m

Question 3

Differential manometers are used to measure

Accepted Answer

Difference in pressure between two points

Answer

Very low pressure

Answer

Pressure in water channels, pipes etc

Answer

Atmospheric pressure

Question 4

Mercury is generally used in barometers because

Accepted Answer

The height of the barometer will be less

Answer

None of these

Answer

It is a very light liquid compared to water

Answer

The height of the barometer will be more

Question 5

When a body is totally or partially immersed in a fluid, it is buoyed up by a force equal to

Accepted Answer

Weight of the fluid displaced by the body

Answer

Weight of the body and fluid displaced by the body

Answer

Difference of weights of the fluid displaced and that of the body

Answer

Weight of the body

Question 6

Bernoulli's equation cannot be applied when the flow is

Accepted Answer

All of these

Answer

Turbulent

Answer

Unsteady

Answer

Rotational

Question 7

For laminar flow in pipes

Accepted Answer

Reynolds number less than 2000

Answer

Reynolds number between 2000 to 4000

Answer

Reynolds number more than 4000

Answer

None of these

Question 8

In steady flow, which one of the following changes with time

Accepted Answer

Any of these

Answer

Pressure

Answer

Density

Answer

Velocity

Question 9

Pump transfers the mechanical energy of a motor or of an engine into _________ of a fluid.

Accepted Answer

Pressure and Kinetic energy

Answer

Pressure energy only

Answer

None of these

Answer

Kinetic energy only

Question 10

Slip of a reciprocating pump is defined as the

Accepted Answer

Difference of theoretical discharge and the actual discharge

Answer

Product of theoretical discharge and the actual discharge

Answer

Ratio of actual discharge to the theoretical discharge

Answer

Sum of actual discharge and the theoretical discharge

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