Mechanical Engineering - Steam Boilers and Engines

41. 

A compound steam engine in which piston rods of high pressure and low pressure cylinders ' are attached to two different cranks set at 180° to each other, is called

A. receiver type compound engine
B. Tandem type compound engine
C. Woolf type compound engine
D. both (a) and (b)

Answer: Option C

Explanation:

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42. 

The heat balance sheet for the boiler shows the

A. complete account of heat supplied by 1 kg of dry fuel and the heat consumed
B. moisture present in the fuel
C. steam formed by combustion of hygrogen per kg of fuel
D. all of the above

Answer: Option A

Explanation:

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43. 

The performance of a boiler is measured by the

A. amount of water evaporated per hour
B. steam produced in kg/h
C. steam produced in kg/kg of fuel burnt
D. all of these

Answer: Option D

Explanation:

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44. 

The evaporative capacity of a boiler is defined as the evaporation of 15.653 kg of water per hour from and at 100° C.

A. Yes
B. No

Answer: Option B

Explanation:

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45. 

The maximum heat loss is a boiler occurs due to

A. moisture in fuel
B. dry flue gases
C. steam formation
D. unburnt carbon

Answer: Option B

Explanation:

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