Answer these 20 Steam Boilers and Engines MCQs and assess your grip on the subject of Steam Boilers and Engines.
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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.
A. Superheater
B. Fusible plug
C. Stop valve
D. Blow off cock
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
A. 175 tonnes/h
B. 250 tonnes/h
C. 135 tonnes/h
D. 100 tonnes/h
A. Water space also
B. Superheater
C. Steam space
D. Chimney
A. Externally fired
B. None of these
C. Internally as well as externally fired
D. Internally fired
A. Cornish boiler
B. Lancashire boiler
C. Locomotive boiler
D. Babcock and Wilcox boiler
A. Vertical
B. Inclined
C. Horizontal
A. High steam and low water safety valve
B. Spring loaded safety valve
C. Dead weight safety valve
D. Lever safety valve
A. Agree
B. Disagree
A. One-fourth
B. One-third
C. Two-fifth
D. Three-fifth
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
A. Increases
B. Has no effect on
C. Decreases
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.
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
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.
A. None of these
B. Before the superheater
C. Before the economiser
D. Between the economiser and chimney
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.
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
A. Disagree
B. Agree