Steam Boilers and Engines MCQs
Steam Boilers and Engines MCQs
Answer these 20 Steam Boilers and Engines MCQs and assess your grip on the subject of Steam Boilers and Engines.
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1: Which of the following statement is correct for a compound steam engine?
A. The temperature range per cylinder is increased, with corresponding increase in condensation.
B. The cost of the engine, for the same power and economy, is more than that of a simple steam engine.
C. The forces in the working parts are increased as the forces are distributed over more parts.
D. The ratio of expansion is reduced, thus reducing the length of stroke.
2: A device used to increase the temperature of saturated steam without raising its pressure, is called
A. Superheater
B. Fusible plug
C. Stop valve
D. Blow off cock
3: The object of producing draught in a boiler is
A. To provide an adequate supply of air for the fuel combustion
B. All of these
C. To discharge the gases of combustion to the atmosphere through the chimney
D. To exhaust the gases of combustion from the combustion chamber
4: The rate of steam produced in Benson boiler is
A. 175 tonnes/h
B. 250 tonnes/h
C. 135 tonnes/h
D. 100 tonnes/h
5: In a glass tube type water indicator for a boiler, one end of the tube is connected to water space and the other end is connected to
A. Water space also
B. Superheater
C. Steam space
D. Chimney
6: Fire tube boilers are
A. Externally fired
B. None of these
C. Internally as well as externally fired
D. Internally fired
7: Which of the following boiler is best suited to meet the fluctuating demand of steam?
A. Cornish boiler
B. Lancashire boiler
C. Locomotive boiler
D. Babcock and Wilcox boiler
8: The fire tubes in a Cochran boiler are
A. Vertical
B. Inclined
C. Horizontal
9: A safety valve mainly used with locomotive and marine boilers is
A. High steam and low water safety valve
B. Spring loaded safety valve
C. Dead weight safety valve
D. Lever safety valve
10: La-mont boiler, is a high pressure water tube steam boiler working on forced circulation.
A. Agree
B. Disagree
11: The diameter of flue tube in a Cornish boiler is __________ that of the shell.
A. One-fourth
B. One-third
C. Two-fifth
D. Three-fifth
12: Which of the following statement is wrong?
A. Water tube boilers are internally fired.
B. Locomotive boiler is a water tube boiler.
C. La-mont boiler is a low pressure water tube boiler.
D. All of these
13: An economiser __________ the steam raising capacity of a boiler.
A. Increases
B. Has no effect on
C. Decreases
14: Which of the following statement is correct?
A. All of these
B. Fire tube boilers are internally fired.
C. Babcock and Wilcox boiler is a water tube boiler.
D. Lancashire boiler is a fire tube boiler.
15: In water tube boilers
A. None of these
B. Water passes through the tubes which are surrounded by flames and hot gases
C. The flames and hot gases pass through the tubes which are surrounded by water
D. Forced circulation takes place
16: Pick Up the following statement is correct?
A. A fire tube boiler occupies less space than a water tube boiler, for a given power.
B. A simple vertical boiler has one fire tube.
C. All of these
D. Steam at a high pressure and in large quantities can be produced with a simple vertical boiler.
17: An air preheater is installed
A. None of these
B. Before the superheater
C. Before the economiser
D. Between the economiser and chimney
18: Select the following statement is wrong?
A. The factor of evaporation for all boilers is always greater than unity.
B. The amount of water evaporated in kg per kg of fuel burnt is called equivalent evaporation from and at 100° C.
C. None of these
D. The ratio of heat actually used in producing the steam to the heat liberated in the furnace is called boiler efficiency.
19: The power of a boiler may be defined as
A. The amount of water evaporated or steam produced in kg per kg of fuel burnt
B. The amount of water evaporated from and at 100° C into dry and saturated steam
C. The evaporation of 15.653 kg of water per hour from and at 100° C
D. The ratio of heat actually used in producing the steam to the heat liberated in the furnace
20: In a reciprocating steam engine, the heat energy in the steam is converted into mechanical work by the to and fro motion of the piston.
A. Disagree
B. Agree
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