Thyristor can be protected from over voltages by using

Thyristor can be protected from over voltages by using
by

1 Answer

Answer :

Thyristor can be protected from over voltages by using Voltage clamping device

by

Related questions

Leakage current flows through the thyristor in

Description : Leakage current flows through the thyristor in

Last Answer : Leakage current flows through the thyristor in Forward blocking mode and Reverse blocking mode.

What is meant by firing angle of thyristor?

Description : What is meant by firing angle of thyristor?

Last Answer : The point at which SCR is triggered is known as firings angle of thyristor.

Is a SCR a thyristor?

Description : Is a SCR a thyristor?

Last Answer : Yes, SCR is a thyristor. Thyristor is the family and SCR is the member of that family but SCR is universally known as thyristor.

How is a thyristor used to convert AC to DC?

Description : How is a thyristor used to convert AC to DC?

Last Answer : thyristor

Is thyristor a DC switch?

Last Answer : Yes ,it is one of the main advantage using thristors as a  switch in DC  circuit ,it has a high current gain

Explain thyristor gate drive circuit.

Description : Explain thyristor gate drive circuit.

Last Answer : Thyristor Gate Drive Circuit: The thyristor can be turned on by pulse voltage signal at gate terminal and it does not require continuous drive signal like the transistor. The gate ... circuit provide required minimum gate voltage and gate current then the thyristor conducts properly.

parallel operation of mosfet can be done more easily as compared to thyristor. why?

Description : parallel operation of MOSFET can be done more easily as compared to thyristor. why?

Last Answer : Parallel operation of MOSFET can be done more easily as compared to thyristor because the resistance of MOSFET is increases with increase in temperature. MOSFET have the positive temperature coefficient. In ... the parallel operation of MOSFET can be done more easily as compared to the thyristor.

what are the disadvantages of thyristor?

Description : what are the disadvantages of thyristor?

Last Answer : Disadvantages of thyristor The silicon controlled rectifier (SCR) is unidirectional devices, so it can control power only in DC power during positive half cycle of AC supply. Thus only DC power is ... cycle. It cannot be used at higher frequencies. The gate current cannot be negative

write short notes on thyristor CSI .

Description : write short notes on thyristor CSI .

Last Answer : Current-source inverter (CSI) is an inverter with a DC current input. Current source inverters are most commonly used in very high power AC motor drives.

what is gate turn off thyristor (GTO)?

Description : Draw the structural diagram of GTO. Explain briefly the switching behavior of GTO with the help of appropriate voltage and current waveform.

Last Answer : Gate Turn Off Thyristor (GTO) Conventional Thyristor can be turned on with gate terminal but can not turn off from gate terminal. But in case of Gate Turn Off Thyristor (GTO), we can turn it on and off ... subdivided as storage period (Ts), fall period (Tp) and tail period (Tt).

Large internal faults are protected by?

Last Answer : Large internal faults are protected by merz price percentage differential protection.

A transmission line is protected by?

Last Answer : A transmission line is protected by distance protection, time graded and current graded overcurrent protection.

can we turn off thyristor using Gate?

Last Answer : No we cannot turn off normal thyristor using Gate.

Sinusoidal Steady-State Analysis - Using nodal analysis, find node voltages in the circuit.

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Last Answer : Sinusoidal Steady-State Analysis - Using nodal analysis, find node voltages in the circuit.

Describe the working principle of Thyristor operated dimmer with the help of circuit diagram.

Description : Describe the working principle of Thyristor operated dimmer with the help of circuit diagram.

Last Answer : Thyristor operated dimmer: A popular thyristor operated dimmer circuit employ TRIAC-DIAC phase control for low AC power control. During each half-cycle, the capacitor charges through (R1+VR1). When the ... time constant {C (R1+VR1)}. Thus by reducing VR1 the lamp brightness can be increased.

What is mean by forced commutation of thyristor?

Last Answer : By using some circuit the forward DC current of thyristor is forced to zero is called forced commutation.

What is mean by natural commutation of thyristor?

Last Answer : Natural commutation is also called as line Communication. The turning off of thyristor due to AC supply is called natural commutation or line commutation. If the thyristor is connected to AC supply ... connected to positive and anode terminal get connected to negative, this turns off the thyristor.

when a thyristor conducts?

Last Answer : Thyristor conducts when the anode voltage is greater than cathode and when the current provided to Gate.

thyristor have how many terminals?

Last Answer : Thyristor have three terminals anode, cathode and Gate.

thyristor can be turned off by?

Description : thyristor can be turned off by?

Last Answer : Thyristor can be turned off by making anode potential equal to cathode potential or by making anode potential less than cathode potential.

what is thyristor commutation?

Last Answer : Thyristor commutation means turning off thyristor.

why thyristor is called semi controlled device?

Last Answer : Thyristor can only be turned on by small gate pulse but it cannot be turn off by using gate hence thyristor is called semi controlled device.

why thyristor is called latching device?

Last Answer : Thyristor can be turn on by positive gate pulse and the current will continue to flow through the device even when the gate voltage is low hence thyristor is called latching device.

Thyristor Switched Capacitor (TSC)

Description : Thyristor Switched Capacitor (TSC)

Last Answer : Thyristor Switched Capacitor (TSC)  TSC is a static compensator. TSC is use for compensating reactive power. Compensation is required for voltage regulation, increasing stability, ... compensating device like TCS phase angle between voltage and current can be maintain.

Instantaneous Voltages

Description : Instantaneous Voltages

Last Answer : Instantaneous value: The value of an alternating quantity at a particular instant is called the instantaneous value of the quantity at that instant.  Maximum Value: The maximum or peak value ... an alternating quantity during a cycle is called the maximum value or amplitude of the quantity.

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Description : A minimum clearance of 6.3 m to ground is required for overhead lines when operating voltages are :  (A) less than 66 kV (B) lie between 66 kV and 110 kV (C) more than 165 kV (D) lie between 110 kV and 165 kV

Last Answer : A minimum clearance of 6.3 m to ground is required for overhead lines when operating voltages are : lie between 66 kV and 110 kV

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Description : The voltages across various discs of suspension insulators having identical discs are different due to:  (A) Surface leakage currents  (B) Series capacitance of lines  (C) Shunt capacitance to ground  (D) Series and shunt capacitances

Last Answer : The voltages across various discs of suspension insulators having identical discs are different due to: Shunt capacitance to ground 

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Last Answer : For cost and safety, the outdoor substations are installed for voltages above 33 kV.

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Last Answer : If current is high then I2R losses will be more .If I2R losses is more then heat generated is more. By heat or increasing temperature resistance will also be increase which will decrease ... voltage we are decreasing current which is advantageous. That's why transmission voltages is high.

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Description : State any two advantages of MCB over Fuse. State the standard specifications of MCB available in the market.  

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Description : What do you mean by active filter? State its advantages over passive filter . Define pass band & stop band with respect to filter.

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Description : State two advantages of digital system over analog system.

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