Vent pipes are provided in a condenser to

The vent valve provided in a liquid handling centrifugal pump is

A

Generally a needle valve

B

Used to release any gases that might be vapour locking the pump

C

Helpful in easy removal of samples

D

All of the above

A tank is fitted with 8 pipes, some of them that fill the tank and others that are waste pipe meant to those that empty the tank can empty it in 6 hours. If all the pipes are kept open when the tank is full, it will take exactly 6 hours for the tank to empty. How many of these are these are fill pipes?

A

2

B

4

C

6

D

5

The thermal efficiency of the engine with condenser as compared to without condenser, for a given pressure and temperature of steam, is

A

Higher

B

Lower

C

Same as long as initial pressure and temperature is unchanged

D

None of the above

For identical situation, condensing film coefficient in case of a horizontal condenser is almost __________ the value expected in case of vertical condenser.

A

Half

B

Twice

C

Thrice

D

Five times

Vertical condenser is advantageous to the horizontal condenser from operation point of view, when

A

Hydrostatic head is required for refluxing the condensate

B

Only the function of condensation is to be carried out

C

Sub cooling of condensate is desired

D

Both the functions of condensation & sub cooling are carried out in a single unit

If partial pressure of air and steam be ‘pa’ and ‘ps’ respectively in a condenser, then according to Dalton's law, the pressure in condenser is equal to

A

ps - pa

B

pa - ps

C

pa + ps

D

None of these

Heat transfer co-efficient for a horizontal condenser as compared to a vertical condenser operating under similar conditions is

A

Same

B

Less

C

About 3 times

D

About 0.33 times

Choose the word which best express the meaning of VENT:

A

opening

B

stodge

C

End

D

Went

Synonym of VENT

A

Opening

B

Start

C

End

D

Went

Each cell has a vent cap

A

to allow gases out when the cell is on charge

B

to add water to the cell if needed

C

to check the level of electrolyte

D

to do all above functions

Vent pipes are provided in a condenser to

Related Questions