BOILER MULTIPLE TYPE INTERVIEW QUESTION & ANSWER - ASKPOWERPLANT

BOILER MULTIPLE TYPE INTERVIEW QUESTION & ANSWER

Boiler-short-type-questions-answer
BOILER MULTIPLE TYPE QUESTION AND ANSWER
2

Today we disscussed about some multiple choice questions and answer related to power plant these questions are very helpful for which do prepration for B.O.E ( BOILER OPERATION ENGINEER ) EXAM.  and also  for ENERY MANGER EXAM , and also for those people which prepared for interview .

A.Steam is preferred medium for heating applications because:
a) high latent heat    b) temperature break down is easy
c) Easy to control and distribute d) all the above

B.The minimum capacity of any closed vessel which generates steam under Indian Boilers Regulation Act is ___.
a) 2.275 liters       b) 22.75 kilo liters
c) 227.5 liters d) 22.75 liters

C.For higher boiler efficiencies, the feed water is heated by ____.
a. recuperator      b. convective heater
c.superheater d.economiser

D.The type of firing used for a pulverised coal fired boiler is:
a)overfiring b)tangential firing
c) vertical firing d) mixed firing for effective heat transfer

E.The recommended TDS level in boiler drum, that can be safely maintained for the water tube boiler is:
a) 3000 – 3500 ppm b) 2000 ppm
c) 5000 ppm                     d) It can be anything

F.An evaporation ratio (steam to fuel ratio) of an efficient oil fired boiler is in the range of ___.

a) 5 – 6 b)13 – 16

c) 1              d) 7 – 9

G.Pick the boiler, which can be considered as most combustion efficient?

a) fluidised bed combustion boiler  b) lanchashire boiler

c) Stoker fired boiler                              d) chain grate boiler

H.Name the predominant loss component for furnace oil fed boiler.
a) losses due to radiation and convention b) loss due to hydrogen in fuel c) loss due to dry flue gas d) loss due to moisture in fuel

I.Controlled wetting of coal (during the coal preparation) would result in:-
a) reduction in flue gas exit temperature
b) decrease in the percentage of unburnt carbon
c) improper combustion
d) increase in the fines of coal

J.The percentage excess air required for pulverised coal fired boiler is:

a) 40 – 50% b) 15 – 20%

c) 60 – 80%            d) 30 – 40%

K.A rise in conductivity of boiler feed water indicates ____ .
a) drop in the contamination of feed water
b) greater purity of feed water
c) rise in the contamination of feed water
d) it has got no relation with the contamination of feed water

L.Demineralisation of water is the process to remove ——–
a) dissolved oxygen b) dissolved salts

c) corbondioxide              d) chlorine

M.The presence of calcium and magnesium bicarbonates in water to steam boiler would form:
a) acidic solution b) alkaline solution
c) neutral solution     d) none of the above

N.Good opportunity for energy savings from continuous blow down water of boiler is by ___.
a) reusing the hot water so formed as make up water
b) using the blow down steam to run steam turbine
c) utilisation of flash steam in deaerator
d) none of the above

O.Water treatment for steam boiler is generally required to:

a) remove hydrogen  b) prevent formation of scales

c) help improve combustion efficiency d) reduce stack temperature

P.The ‘indirect method’ of evaluating boiler efficiency is also called as “Heat Loss” method. – True or False?

Q.The presence of calcium and magnesium bicarbonates in water to steam boiler would form:
a) acidic solution b) alkaline solution
c) neutral solution              d) none of the above

R.Good opportunity for energy savings from continuous blow down water of boiler is by ___.
a) reusing the hot water so formed as make up water
b) using the blow down steam to run steam turbine
c) utilisation of flash steam in deaerator
d) none of the above

S.De-aeration of boiler feed water is referred to as:
a) removal of dissolved gases b) removal of silica
c) removal of scales by blow down d) phosphate treatment of feed water

T.The percentage raise in boiler efficiency by a 20 degree centigrade raise in combustion air temperature is ___.
a) 0.1%    b) 0.2%   c) 10% d) 1%

U.The elements of ultimate analysis of fuel does not include

a) carbon            b) Hydrogen

c) oxygen d) volatile matter

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Very very important & knowledgeable information about boiler and its parts.very very thanks ,a lot of best wishes for your future life.

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