The surge phenomenon is particularly important in case of

The design of mechanical parts is particularly important in case of _____ speed machines.

A

low

B

medium

C

high

D

any of the above

The Battle of Plassey is a particularly important event in Indian history because

A

The Nawab of Bengal lost in it

B

It enabled the British to have power in Bengal

C

It laid the foundation for British rule in India

D

It enabled the British to reap higher trade profits

Surge tanks are used

A

for storage water

B

to increase the velocity in a pipeline

C

as overflow valves

D

to guard against water hammer

For an overhead line, the surge impedance is taken as

A

20-30 ohms

B

70-80 ohms

C

100-200 ohms

D

500-1000 ohms

The surge resistance of cable is

A

5 ohms

B

20 ohms

C

50 ohms

D

100 ohms

Which of the following devices will receive voltage surge first travelling on the transmission line ?

A

Lightning arresters

B

Relays

C

Step-down transformer

D

Switchgear

What will be the reflection co-efficient of the wave of load connected to transmission line if surge impedance of the line is equal to load ?

A

Zero

B

Unity

C

Infinity

D

None of the above

The purpose of a surge tank is

A

To control the pressure variations due to rapid changes in the pipe line flow

B

To eliminate water hammer possibilities

C

To regulate flow of water to turbines by providing necessary retarding head of water

D

All of the above

Surge tanks are provided in high pressure water pipelines to

A

Store a definte quantity ofwater all the time

B

Reduce the water hammer

C

Facilitate easy dismantling of pipeline for cleaning and maintenance

D

None of these

Identify the word/s, if any, from the sentence, Otherwise. indicate 'No Error'. She 'particularly' enjoys 'watching' cricket 'matches' 'among' Bangladesh and Kenya. 'No Error'

A

particularly

B

watching

C

matches

D

among

The surge phenomenon is particularly important in case of

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