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Power Digital Electrical Engineering

Power Digital Electrical Engineering
Question:-
Option (A)
voltage limit is violated
Option (B)
active power limit is violated
Option (C)
reactive power limit is violated
Option (D)
phase angle limit is violated
Correct Option:
C
Question:-
Option (A)
increase in supply frequency and conductor size
Option (B)
increase in supply frequency but reduction in conductor size
Option (C)
decrease in supply frequency and conductor size
Option (D)
decrease in supply frequency but increase in conductor size
Correct Option:
B
Question Solution:
• Corona loss is directly proportional to system frequency.
• A higher conductor radius means lesser surface field intensity and, hence, reduced corona loss.
Question:-
Option (A)
(i) only
Option (B)
(i), (iii) and (iv)
Option (C)
(i) and (iii)
Option (D)
(iii) and (iv)
Correct Option:
D
Question Solution:
Shunt reactors and capacitor and series capacitors are the passive compensators and synchronous capacitor and thyristorised controlled capacitors and reactors are the active compensators.
Question:-
Option (A)
37.5 MW
Option (B)
30 MW
Option (C)
40 MW
Option (D)
36.75 MW
Correct Option:
B
Question Solution:
Load factor=
0.6=
=> average demand=15 MW
Plant capacity factor=
0.5=
=>  Installed capacity=30 MW