Power Plant Engineering Mock Test 6

10%

Question 1 of 10

1. Manometric head, in case of a centrifugal pump, is equal to __________

All of the mentioned

Workdone per kN of water - Losses within the impeller

Suction lift + Loss of head in suction pipe due to friction + Delivery lift + Loss of head in delivery pipe due to friction + Velocity head in the delivery pipe

Energy per kN at outlet of impeller - Energy per kN at inlet of impeller

Question 1 of 10

Question 2 of 10

2. The maximum efficiency of jet propulsion of a ship with inlet orifices at right angles to the direction of motion of ship, will be?

50%

60%

40%

80%

Question 2 of 10

Question 3 of 10

3. The hydraulic efficiency of a reaction turbine is the ratio of __________

work done on the wheel to the energy actually supplied to the turbine

actual work available at the turbine to energy imparted to the wheel

none of the mentioned

power produced by the turbine to the energy actually supplied by the turbine

Question 3 of 10

Question 4 of 10

4. What is the purpose of testing an internal combustion engine?

to conform the data used in design, the validity of which may be doubtful

to determine the information, which cannot be obtained by calculations

to satisfy the customer regarding the performance of the engine

all of the mentioned

Question 4 of 10

Question 5 of 10

5. Kinematic similarity is said to exist between the model and the prototype, if both of them __________

are identical in shape, but differ only in size

have identical velocities

have identical forces

are equal in size and shape

Question 5 of 10

Question 6 of 10

6. The maximum adiabatic flame temperature is attained when the fuel is burnt with __________

theoretically required amount of oxygen

more than theoretically required amount of air

theoretically required amount of air

less than theoretically required amount of air

Question 6 of 10

Question 7 of 10

7. A diesel engine is __________ as compared to petrol engine, both running at rated load.

more efficient

all of the mentioned

equally efficient

less efficient

Question 7 of 10

Question 8 of 10

8. Reactors for propulsion applications are designed for__________

natural uranium

enriched uranium

any form of uranium

thorium

Question 8 of 10

Question 9 of 10

9. Discharge of a centrifugal pump is __________

inversely proportional to diameter of its impeller

directly proportional to (diameter)² of its impeller

directly proportional to diameter of its impeller

inversely proportional to (diameter)² of its impeller

Question 9 of 10

Question 10 of 10

10. The compensating jet in a carburettor supplies almost constant amount of petrol at all speeds because the __________

the diameter of the jet is constant and the discharge coefficient is invariant

the flow from the main jet is diverted to the compensating jet with increase in speed

flow is produced due to the static head in the float chamber

jet area is automatically varied depending on the suction

Question 10 of 10