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
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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
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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For an EHV equipment for maintenance first it should be isolated and connected to ground because
Anonymous Quiz
20%
A. to provide low impedance
20%
B. to discharge the charging capacitance to ground
0%
C. protection for operating personnel
60%
D. both (B) and (C)
When the 3-phase system is not grounded and if Single Line to Ground fault occurs, the voltage of the other two healthy phases will
A. Increases
B. Decreases
C. Remains unaffected
D. none of the above
Answer: Option A
If The line to ground voltage is V then line to line voltage will be √ 3 times V. Now if one line is grounded due to ground fault. Then voltage between this line and faulted line becomes double the voltage between line to ground. I. E from line to ground and from ground to faulted phase voltage will be added
A. Increases
B. Decreases
C. Remains unaffected
D. none of the above
Answer: Option A
If The line to ground voltage is V then line to line voltage will be √ 3 times V. Now if one line is grounded due to ground fault. Then voltage between this line and faulted line becomes double the voltage between line to ground. I. E from line to ground and from ground to faulted phase voltage will be added
Moisture content in the soil _______ the earth soil resistance
Anonymous Quiz
33%
A. increase
67%
B. decrease
0%
C. does not affect
0%
D. none of the above
Generally grounding is provided for
A. only for the safety of the equipment
B. only for the safety of the operating personnel
C. both (A) and (B)
D. none of the above
Answer: Option C
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Ground resistance should be designed such that
A. grounding resistance should be as low as possible
B. grounding resistance should be as high as possible
C. grounding resistance should be always zero
D. none of the above
Answer: Option A
@power_system_engineering
A. only for the safety of the equipment
B. only for the safety of the operating personnel
C. both (A) and (B)
D. none of the above
Answer: Option C
—————————————————————-
Ground resistance should be designed such that
A. grounding resistance should be as low as possible
B. grounding resistance should be as high as possible
C. grounding resistance should be always zero
D. none of the above
Answer: Option A
@power_system_engineering
Earth wire or ground wire is made of
Anonymous Quiz
58%
A. copper
0%
B. aluminium
8%
C. iron
33%
D. galvanized steel
The objective of earthing or grounding is
A. to provide as low resistance possible to the ground
B. to provide as high resistance possible to the ground
C. to provide flow of positive, negative and zero sequence currents
D. none of the above
Answer: Option A
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Factors on which soil resistance depends
A. depth of the electrode
B. moisture
C. Nacl
D. all the above
Answer: Option D
@power_system_engineering
A. to provide as low resistance possible to the ground
B. to provide as high resistance possible to the ground
C. to provide flow of positive, negative and zero sequence currents
D. none of the above
Answer: Option A
——————————————————————
Factors on which soil resistance depends
A. depth of the electrode
B. moisture
C. Nacl
D. all the above
Answer: Option D
@power_system_engineering