Test: Power Plant Level - 2 - Mechanical Engineering MCQ

In forced circulation boilers, about 90% of water is recirculated without evaporation. The circulation ratio is

The excess air required for combustion of pulverized coal i of the order of

In a surface condenser used in a steam power station, undercooling of condensate is undesirable as this would

Of all power plants, hydel is more disadvantageous when one compares the

In thermal power plants, the deaerator is used mainly to

Induced draught fans of a large steam generator have

Coal fired power plant boilers manufactured in India generally use:

At constant efficiency, the horse power of a fan is

Match List-I with List-II select the correct answer using the codes given below the lists: 

Benson boiler is one of the high pressure boilers having

Which one of the following safety devices is used to protect the boiler when the water level falls below a minimum level ?

Forced draught fans of a large steam generator have

The device used to heat feed-water by utilizing the heat of the exhaust flue gases before leaving through the chimney, is called

Once- through boilers operate at

A device which is used to drain off water from steam pipes without escape of steam is called

Blowing down of boiler water is the process to

Match List-I (Boilers) with List-II (Type/ Description) select the correct answer using the codes given below the lists:

The draught in locomotive boilers is produced by

which one of the following is the fire-tube boiler?

Which one of the following boiler accessories does not need 'flue–gas' for its operation?

Which one of the following fittings in mounted on the boiler to put off the fire in the furnace, when water level falls to an unsafe limit?

Which one of the following accessories is connected to the steam supply pipe line to maintain constant pressure?