Arc in a circuit behaves as
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Electrical Engineering · all questionsSwitchgear Protections
Switchgear Protections
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A fuse is connected
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The reflection co-efficient at the open circuited end of a transmission line.
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Protection by fuses is generally not used beyond
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The ground wire should not be smaller than No ______ copper.
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Directional relays are based on flow of
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Admittance relay is _______ relay.
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The voltage appearing across the contacts after opening of the circuit breaker is called______voltage.
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The material used for fuse must have
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For cost and safety, the outdoor substations are installed for voltages above
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The torque produced in induction type relay (shaded pole structure) is
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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 ?
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Burden of a protective relay is the power
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The line insulation is the insulation level of the station equipment.
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A balanced 3-phase system consists of
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The delay fuses are used for the protection of ________ .
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Ungrounded neutral transmission system is not recommended because of system
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Induction cup relay is operated due to changes in
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Which of the following parameter can be neglected for a short line?
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Shunt capacitance is neglected while considering
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