A generator has reactances of sub transient (X")= 0.5 pu, transient (X') = 0.8 pu and synchronous reactance (X) = 5 pu. The voltages at these reactances are 1.2 V, 1.1 V and 1 V respectively. Find the corresponding sub transient fault current in pu?

Power Systems
A generator has reactances of sub transient (X")= 0.5 pu, transient (X') = 0.8 pu and synchronous reactance (X) = 5 pu. The voltages at these reactances are 1.2 V, 1.1 V and 1 V respectively. Find the corresponding sub transient fault current in pu?

0.2 pu

3.975 pu

1.375 pu

2.4 pu

0.2 pu

3.975 pu

1.375 pu

2.4 pu

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
Alternate formation and breakage of bubbles are called

All of these

water hamming.

cavitations.

surgfication.

All of these

water hamming.

cavitations.

surgfication.

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
The rate of rise of restricting voltage depends upon the

Capacitance of the system.

Inductance of the system.

Inductance and capacitance of the system.

Type of CB.

Capacitance of the system.

Inductance of the system.

Inductance and capacitance of the system.

Type of CB.

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
Gross head of an hydroelectric power station is

all of above.

the height of water level in the river where the tail race is provided.

the height of water level in the river where the storage is provided.

the difference of water level between the level in storage and tail race.

all of above.

the height of water level in the river where the tail race is provided.

the height of water level in the river where the storage is provided.

the difference of water level between the level in storage and tail race.

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
In case of failure of prime mover of the generator, which type of relay is used?

reverse power relay

impedance relay

distance relays

offset mho relay

reverse power relay

impedance relay

distance relays

offset mho relay

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
For complete protection of 3-phase system from the short circuit faults minimum number of relays required are

one

three

two

six

one

three

two

six

ANSWER DOWNLOAD EXAMIANS APP

Power Systems

Power Systems A generator has reactances of sub transient (X")= 0.5 pu, transient (X') = 0.8 pu and synchronous reactance (X) = 5 pu. The voltages at these reactances are 1.2 V, 1.1 V and 1 V respectively. Find the corresponding sub transient fault current in pu?

Power Systems Alternate formation and breakage of bubbles are called

Power Systems The rate of rise of restricting voltage depends upon the

Power Systems Gross head of an hydroelectric power station is

Power Systems In case of failure of prime mover of the generator, which type of relay is used?

Power Systems For complete protection of 3-phase system from the short circuit faults minimum number of relays required are

Power Systems
A generator has reactances of sub transient (X")= 0.5 pu, transient (X') = 0.8 pu and synchronous reactance (X) = 5 pu. The voltages at these reactances are 1.2 V, 1.1 V and 1 V respectively. Find the corresponding sub transient fault current in pu?

Power Systems
Alternate formation and breakage of bubbles are called

Power Systems
The rate of rise of restricting voltage depends upon the

Power Systems
Gross head of an hydroelectric power station is

Power Systems
In case of failure of prime mover of the generator, which type of relay is used?

Power Systems
For complete protection of 3-phase system from the short circuit faults minimum number of relays required are