Power system MCQ #3
POWER SYSTEM MCQ 41 TO 45
41) What is the main type of distribution system in India?
A) Radial
B) Parallel
C) Network
D) All of these
42) Which component connects the substation to the area where power is to be distributed?
A) Distributors
B) Service mains
C) Feeders
D) All of these
43) Where the radial systems are generally employed?
A) Where power is generated at low voltage
B) Where power is generated at high voltage
C) Where power is generated at low voltage and substation is located at the centre of the load
D) Where power is generated at high voltage and substation is located at the centre of the load
44) In a distribution system, which of the following items shares the major cost?
A) Conductors
B) Earthing systems
C) Insulators
D) Distribution transformer
45) Which type of distribution is preferred in residential areas?
A) Single phase, two wire
B) Three phase, three wire
C) Three phase, four wire
D) Two phase, four wire
ANSWER : | (41)-A | (42)-C | (43)-C | (44)-D | (45)-C |
POWER SYSTEM MCQ 46 TO 50:
46) If the voltage of the system is about 230 V, then what would be the highest and the lowest permissible voltage?
A) 242 and 214 V
B) 240 and 210 V
C) 244 and 216 V
D) 244 and 212 V
47) Name the cable which connects the distributor to the consumer terminals.
A) Distributors
B) Service mains
C) Feeders
D) All of these
48) What is the main drawback of using paper as the insulating material?
A) Is hygroscopic
B) Has poor dielectric strength
C) Has a very low insulation resistivity
D) Has high capacitance
49) How many cores are used in a cable for the transmission of voltages up to 66 kV?
A) Single core
B) Two core
C) Three core
D) All of the above
50) The cable best suited for the transmission of voltages from 33 kV to 66 kV is_______________.
A) Belted cables
B) Screened cables
C) Pressure cables
D) None of these
ANSWER: | (46)-C | (47)-B | (48)-A | (49)-C | (50)-B |
POWER SYSTEM MCQ 51 TO 55:
51) What is the source of heat generation in cables?
A) Copper loss in conductor
B) Dielectric losses in cable insulation
C) Losses in metallic sheathings and armouring
D) All of these
52) What is the safe working temperature for a conductor in case of armoured cables?
A) 50° C
B) 75° C
C) 65° C
D) 40° C
53) The thickness of insulation layer provided on the conductor, in cables depend on_______.
A) Operating voltage
B) Current to be carried
C) Power factor
D) All of these
54) The conductor carries more current on the surface in comparison to its core. What is this phenomenon called?
A) Corona
B) Ferranti effect
C) Skin effect
D) Proximity effect
55) The current distribution may not be uniform in a conductor, which effect is this?
A) Skin effect
B) Proximity effect
C) Ferranti effect
D) None of these
ANSWER: | (51)-D | (52)-C | (53)-A | (54)-C | (55)-B |
POWER SYSTEM MCQ 56 TO 60:
56) In which climate does the chances of occurrence of corona is maximum?
A) Dry
B) Hot summer
C) Winter
D) Humid
57) Why are the hollow conductors used?
A) Reduce the weight of copper
B) Improve stability
C) Reduce corona
D) Increase power transmission capacity
58) Post type insulators are generally used in lines operating
A) Above 100 kV
B) Below 33 kV
C) At any voltage level
D) None of these
59) Which type of insulators is used in guy wires?
A) Stay insulators
B) Shackle insulators
C) Pin type
D) Strain type
60) Where is the suspension type of insulators mainly used?
A) RCC poles
B) Wooden poles
C) Steel poles
D) Steel towers
ANSWER: | (56)-D | (57)-C | (58)-C | (59)-A | (60)-D |
41) What is the main type of distribution system in India?
A) Radial
B) Parallel
C) Network
D) All of these
42) Which component connects the substation to the area where power is to be distributed?
A) Distributors
B) Service mains
C) Feeders
D) All of these
43) Where the radial systems are generally employed?
A) Where power is generated at low voltage
B) Where power is generated at high voltage
C) Where power is generated at low voltage and substation is located at the centre of the load
D) Where power is generated at high voltage and substation is located at the centre of the load
44) In a distribution system, which of the following items shares the major cost?
A) Conductors
B) Earthing systems
C) Insulators
D) Distribution transformer
45) Which type of distribution is preferred in residential areas?
A) Single phase, two wire
B) Three phase, three wire
C) Three phase, four wire
D) Two phase, four wire
ANSWER : | (41)-A | (42)-C | (43)-C | (44)-D | (45)-C |
POWER SYSTEM MCQ 46 TO 50:
46) If the voltage of the system is about 230 V, then what would be the highest and the lowest permissible voltage?
A) 242 and 214 V
B) 240 and 210 V
C) 244 and 216 V
D) 244 and 212 V
47) Name the cable which connects the distributor to the consumer terminals.
A) Distributors
B) Service mains
C) Feeders
D) All of these
48) What is the main drawback of using paper as the insulating material?
A) Is hygroscopic
B) Has poor dielectric strength
C) Has a very low insulation resistivity
D) Has high capacitance
49) How many cores are used in a cable for the transmission of voltages up to 66 kV?
A) Single core
B) Two core
C) Three core
D) All of the above
50) The cable best suited for the transmission of voltages from 33 kV to 66 kV is_______________.
A) Belted cables
B) Screened cables
C) Pressure cables
D) None of these
ANSWER: | (46)-C | (47)-B | (48)-A | (49)-C | (50)-B |
POWER SYSTEM MCQ 51 TO 55:
51) What is the source of heat generation in cables?
A) Copper loss in conductor
B) Dielectric losses in cable insulation
C) Losses in metallic sheathings and armouring
D) All of these
52) What is the safe working temperature for a conductor in case of armoured cables?
A) 50° C
B) 75° C
C) 65° C
D) 40° C
53) The thickness of insulation layer provided on the conductor, in cables depend on_______.
A) Operating voltage
B) Current to be carried
C) Power factor
D) All of these
54) The conductor carries more current on the surface in comparison to its core. What is this phenomenon called?
A) Corona
B) Ferranti effect
C) Skin effect
D) Proximity effect
55) The current distribution may not be uniform in a conductor, which effect is this?
A) Skin effect
B) Proximity effect
C) Ferranti effect
D) None of these
ANSWER: | (51)-D | (52)-C | (53)-A | (54)-C | (55)-B |
POWER SYSTEM MCQ 56 TO 60:
56) In which climate does the chances of occurrence of corona is maximum?
A) Dry
B) Hot summer
C) Winter
D) Humid
57) Why are the hollow conductors used?
A) Reduce the weight of copper
B) Improve stability
C) Reduce corona
D) Increase power transmission capacity
58) Post type insulators are generally used in lines operating
A) Above 100 kV
B) Below 33 kV
C) At any voltage level
D) None of these
59) Which type of insulators is used in guy wires?
A) Stay insulators
B) Shackle insulators
C) Pin type
D) Strain type
60) Where is the suspension type of insulators mainly used?
A) RCC poles
B) Wooden poles
C) Steel poles
D) Steel towers
ANSWER: | (56)-D | (57)-C | (58)-C | (59)-A | (60)-D |
Leave a Comment