Q.1
The delay fuses are used for the protection of ________ .
Q.2
Over voltage protection is recommended for
Q.3
Overfluxing protection is recommended for
Q.4
Fault diverters are basically
Q.5
Relays can be designed to respond to changes in
Q.6
The interaction between a transmission line and communication line is minimized by
Q.7
A transmission line is protected by
Q.8
If the fault occurs near the impedance relay, the VII ratio will be
Q.9
Oil switches are employed for
Q.10
Which of the following medium is employed for extinction of arc in air circuit breaker ?
Q.11
Protective relays are devices that detect abnormal conditions in electrical circuits by measuring
Q.12
Ungrounded neutral transmission system is not recommended because of system
Q.13
Induction cup relay is operated due to changes in
Q.14
The under voltage relay can be used for
Q.15
The torque produced in induction type relay (shaded pole structure) is
Q.16
What will be the reflection co-efficient of the wave of load connected to transmission line if surge impedance of the line is equal to load ?
Q.17
Bus coupler is very essential in arrangement
Q.18
On which of the following routine tests are conducted ?
Q.19
Relays are used for phase faults on long line.
Q.20
Which of the following is the least expensive protection for overcurrent is low voltage system ?
Q.21
Which of the following circuit breakers has high reliability and minimum maintenance ?
Q.22
Which of the following parameter can be neglected for a short line?
Q.23
Shunt capacitance is neglected while considering
Q.24
In order that current should flow without causing excessive heating or voltage drop, the relay contacts should
Q.25
On which of the following effects of electric current a fuse operates?
Q.26
Burden of a protective relay is the power
Q.27
The line insulation is the insulation level of the station equipment.
Q.28
A balanced 3-phase system consists of
Q.29
By which of the following methods major portion of the heat generated in a H.R.C. fuse is dissipated ?
Q.30
Directional relays are based on flow of
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