Underground cables are laid at sufficient depth
A. To minimize temperature stresses
B. To avoid being unearthed easily due to removal of soil
C. To minimize the effect of shocks and vibrations due to gassing vehicles, etc.
D. For all of the above reasons
Answer: Option C
@power_system_engineering
A. To minimize temperature stresses
B. To avoid being unearthed easily due to removal of soil
C. To minimize the effect of shocks and vibrations due to gassing vehicles, etc.
D. For all of the above reasons
Answer: Option C
@power_system_engineering
#mcqs_power_plant_engineering (Page -1),
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Rankine efficiency of a steam power plant
A. improves in summer as compared to that in winter
B. improves in winter as compared to that in summer
C. is unaffected by climatic conditions
D. none of the above
Answer: Option B
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In a boiler installation the natural draught is produced
A. due to the fact that furnace gases being light go through the chimney giving place to cold air from outside to rush in
B. due to the fact that pressure at the grate due to cold column is higher than the pressure at the chimney base due to hot column
C. due to the fact that at the chimney top the pressure is more than its environmental pressure
D. all of the above
Answer: Option B
A. improves in summer as compared to that in winter
B. improves in winter as compared to that in summer
C. is unaffected by climatic conditions
D. none of the above
Answer: Option B
—————————————————————
In a boiler installation the natural draught is produced
A. due to the fact that furnace gases being light go through the chimney giving place to cold air from outside to rush in
B. due to the fact that pressure at the grate due to cold column is higher than the pressure at the chimney base due to hot column
C. due to the fact that at the chimney top the pressure is more than its environmental pressure
D. all of the above
Answer: Option B
The artificial draught normally is designed to produce
Anonymous Quiz
0%
A. less smoke
25%
B. more draught
25%
C. less chimney gas temperature
50%
D. all of the above
In De Laval steam turbine
Anonymous Quiz
0%
A. the pressure in the turbine rotor is approximately same as in condenser
50%
B. the pressure in the turbine rotor is higher than pressure in the condenser
50%
C. the pressure in the turbine rotor gradually decreases from inlet to exit from condenser
0%
D. none from the above
In Rankine cycle the work output from the turbine is given by
A. change of internal energy between inlet and outlet
B. change of enthaply between inlet and outlet
C. change of entropy between inlet and outlet
D. change of temperature between inlet and outlet
Answer: Option B
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The draught produced by chimney of given height at given outside temperature
A. decreases if the chimney gas temperature increases
B. increases if the chimney gas temperature increases
C. remains same irrespective of chimney gas temperature
D. may increase or decrease
Answer: Option B
A. change of internal energy between inlet and outlet
B. change of enthaply between inlet and outlet
C. change of entropy between inlet and outlet
D. change of temperature between inlet and outlet
Answer: Option B
————————————————————
The draught produced by chimney of given height at given outside temperature
A. decreases if the chimney gas temperature increases
B. increases if the chimney gas temperature increases
C. remains same irrespective of chimney gas temperature
D. may increase or decrease
Answer: Option B
Compounding of steam turbine is done for
Anonymous Quiz
50%
A. reducing the work done
25%
B. increasing the rotor speed
25%
C. reducing the rotor speed
0%
D. balancing the turbine
In a regenerative feed heating cycle, the greatest economy is affected
Anonymous Quiz
0%
A. when steam is extracted from only one suitable point of steam turbine
0%
B. when steam is extracted from several places in different stages of steam turbine
75%
C. when steam is extracted only from the last stage of steam turbine
25%
D. when steam is extracted only from the first stage of steam turbine
In ______ system fuel from a central pulverizing unit is delivered to a bunker and then to the various burners
Anonymous Quiz
17%
A. unit
33%
B. central
33%
C. power
17%
D. none of the above
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