RVUNL ME Quiz 8

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Question 1

For maximum efficiency in case of Pelton wheel, the ratio of jet velocity to bucket velocity is equal to

• A
• B
• C2
• D

Question 2

The maximum number of jets generally employed in an impulse turbine without jet interference is

• A4
• B6
• C8
• D12

Question 3

Why is an air vessel used in a reciprocating pump?

• ATo obtain a continuous supply of water at uniform rate
• BTo reduce suction head
• CTo increase the delivery head
• DTo reduce cavitation

Question 4

Why is multi-staging in centrifugal pumps used

• Afor high flow rate
• Bfor high head
• Cfor high speed
• Dfor high efficiency

Question 5

When the vanes fixed to the hub are adjustable then the turbine is known as

• APropeller turbine
• BKaplan turbine
• CFrancis turbine
• DPelton turbine

Question 6

Match the following

• AI – II – A
  2 – III – C
  3 – I – B
• BI – III – B
  2 –II -C
  3 – I – A
• C1 –II – A
  2 –III – B
  3– I – C
• D1– I – C
  2 – II – B
  3 – III – A

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