Maharashtra BOE Exam solved papers pdf

Boiler Operation Engineer Previous year Questions With Answer Set - 23

1. Bomb calorimeter is used determine the calorific value of ___________

a) solid fuels

b) liquid fuels

c) both solid and liquid fuels

d) none of the mentioned

Ans. c

2. Which of these is not a reason for reduction in maximum flame temperature in actuality?

a) incomplete combustion

b) heat loss to exhaust gases

c) excess air requirements

d) heat loss to surroundings

Ans. b

3. Higher efficiency in combustion of solid fuel cannot be achieved by ___________

a) keeping flue gas temperature very high

b) proper fuel preparation

c) supplying correct quantity of combustion air

d) adopting efficient fuel-firing technique and equipment

Ans. a

4. Internal energy of combustion products is ______________ than that of reactants.

a) less

b) more or less (depends on state of fuel)

c) same

d) more

Ans. a

5. Grindability index of a coal is 100. It implies that the __________

a) coal can be easily pulverised

b) coal can be pulverised with great difficulty

c) coal can’t be pulverised

d) power consumption in grinding the coal will be very high

Ans. a

6. HCV stands for?

a) Higher Combustion Value

b) Higher Convection Value

c) Higher Calorific Value

d) Higher Calorific Value

Ans. d

7. High amount of sulphur and phosphorous in coke causes __________

a) decrease in its calorific value

b) increase in its strength

c) brittleness of steel made by using it

d) none of the mentioned

Ans. d

8. Tar yield in the low temperature and high temperature carbonisation of dry coal may be respectively __________ percent.

a) 10 & 3

b) 3 & 10

c) 15 & 8

d) 10 & 20

Ans. a

9. The difference between the enthalpy of products & the enthalpy of reactants when complete combustion occurs at specific temperature & pressure is called?

a) Enthalpy of burning

b) Enthalpy of Combustion

c) Enthalpy of complete combustion

d) None of the mentioned

Ans. b

10. The internal energy of products minus the internal energy of reactants for complete combustion at specific temperature & pressure gives the internal energy of?

a) combustion

b) partial combustion

c) complete combustion

d) none of the mentioned

Ans. a

Boiler Objectives Questions :

Boiler Operation (BOE) Previous Year Multiple Choice Questions With Answer Set - 20

Boiler Operation Engineer (BOE) Previous Year Questions With Answer - 21

Boiler Operation Engineer Previous year Questions With Answer Set - 22

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