Is thyristor a DC switch?

Question

asked Mar 6, 2018 by anonymous

133 views

Please log in or register to answer this question.

2 Answers

← Prev Question Next Question →

Related questions

asked Mar 19, 2018 by anonymous

How is a thyristor used to convert AC to DC?

0 like 0 dislike

89 views 0 answers

asked Sep 15, 2017 by anonymous

why IGBT is preferred as a power switch over both power BJT and MOSFET?

Last answer: Because it has a higher switching frequency and heat tolerance.

1 like 0 dislike

110 views 1 answer

asked Apr 28, 2018 by anonymous

The device which allows reverse power flow and withstands highest switch frequency is

The device which allows reverse power flow and withstands highest switch frequency is (A) GTO (B) MOSFET (C) IGBT (D) Inverter grade SCR

Last answer: The device which allows reverse power flow and withstands highest switch frequency is MOSFET

0 like 0 dislike

60 views 1 answer

asked Mar 6, 2018 by anonymous

Is SCR unidirectional switch?

Last answer: Yes, SCR is a unidirectional switch.

0 like 0 dislike

56 views 1 answer

asked Mar 19, 2018 by anonymous

What is a phase control thyristor?

0 like 0 dislike

138 views 0 answers

asked Mar 19, 2018 by anonymous

What is the use of a thyristor in a circuit?

0 like 0 dislike

2.8k views 0 answers

asked Mar 19, 2018 by anonymous

What is a reverse conducting thyristor?

0 like 0 dislike

70 views 0 answers

asked Mar 19, 2018 by anonymous

What is the function of a thyristor?

0 like 0 dislike

71 views 0 answers

asked Mar 19, 2018 by anonymous

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.

0 like 0 dislike

140 views 1 answer

asked Feb 5, 2018 by anonymous

What are the desirable characteristics of ideal switch?

Last answer: Desirable characteristics of the ideal switch: It is desirable to have power switches characteristics closer to ideal switch. The ideal switch should have the following characteristics. Zero resistance when ... . 100% efficiency. Able to control power flow with zero power dissipation.

1 like 0 dislike

968 views 1 answer

asked Mar 19, 2018 by anonymous

What is thyristor family?

0 like 0 dislike

56 views 0 answers

asked Mar 19, 2018 by anonymous

What is meant by firing angle of thyristor?

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

0 like 0 dislike

172 views 1 answer

asked Mar 19, 2018 by anonymous

Why SCR is called as thyristor?

0 like 0 dislike

81 views 0 answers

asked Mar 19, 2018 by anonymous

What is the application of thyristor?

0 like 0 dislike

73 views 0 answers

asked Aug 8, 2017 by anonymous

what is gate turn off thyristor (GTO)?

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).

0 like 0 dislike

1.6k views 1 answer

asked May 8, 2018 by anonymous

Thyristor can be protected from over voltages by using

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

0 like 0 dislike

81 views 1 answer

asked May 8, 2018 by anonymous

Leakage current flows through the thyristor in

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

0 like 0 dislike

156 views 1 answer

asked Mar 19, 2018 by anonymous

Why thyristor are not preferred for inverter?

0 like 0 dislike

432 views 0 answers

asked Feb 19, 2018 by anonymous

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.

0 like 0 dislike

2.8k views 1 answer

asked Dec 7, 2017 by anonymous

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

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.

2 like 0 dislike

262 views 1 answer

asked Dec 6, 2017 by anonymous

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

1 like 0 dislike

757 views 2 answers

asked Nov 15, 2017 by anonymous

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.

1 like 0 dislike

88 views 2 answers

asked Apr 28, 2018 by anonymous

A switch tail ring counter is made by using a single D-FF. The resulting circuit is

A switch tail ring counter is made by using a single D-FF. The resulting circuit is (A) T-FF (B) D-FF (C) SR-FF (D) JK-FF

Last answer: A switch tail ring counter is made by using a single D-FF. The resulting circuit is T-FF

0 like 0 dislike

67 views 1 answer

asked Mar 20, 2018 by anonymous

A centrifugal switch is used to disconnect starting winding when motor has?

Last answer: A centrifugal switch is used to disconnect starting winding when motor has picked up about 50 to 70 per cent of rated speed.

0 like 0 dislike

193 views 1 answer

asked Dec 17, 2017 by anonymous

What is the difference between a switch and a relay?

Last answer: Switch is simply a mechanical contact mechanism and relay is a electromagnetic switch . Switch can be direct mechanically turn on and off but relay can be operated by energising coil .

0 like 0 dislike

88 views 1 answer

asked Mar 25, 2018 by anonymous

A closed switch has a resistance of?

Last answer: A closed switch has a resistance of zero.

0 like 0 dislike

124 views 1 answer

asked Mar 20, 2018 by anonymous

If the centrifugal switch of a two-value capacitor motor using two capacitors fails to open then?

Last answer: If the centrifugal switch of a two-value capacitor motor using two capacitors fails to open then Electrolytic capacitor will, in all probability, suffer break down.

0 like 0 dislike

90 views 1 answer

asked Mar 20, 2018 by anonymous

In a single phase motor the centrifugal switch?

Last answer: In a single phase motor the centrifugal switch disconnects auxiliary winding of the motor.

0 like 0 dislike

122 views 1 answer

asked Mar 19, 2018 by anonymous

A thermal protection switch can protect against?

Last answer: A thermal protection switch can protect against overload.

0 like 0 dislike

175 views 1 answer

asked Sep 27, 2017 by anonymous

in which region BJT act as a switch?

Last answer: BJT act as switch in saturation and cutoff region ( ON state in saturation region and OFF state in cut-off region )

0 like 0 dislike

90 views 2 answers

asked Sep 20, 2018 by anonymous

How rating of main switch and cable is selected for Industrial Installation.

Last answer: 1. Rating of Main Switch or Fuse Rating is decided in industrial installation: Rating of main switch or fuse is based up the starting current of motor. For calculating starting current is considered 2 ... take 1.5 times the rated current or full load current. & thus cable rating is decided.

0 like 0 dislike

114 views 1 answer

asked May 8, 2018 by anonymous

Earthing switch is used for?

Earthing switch is used for? (A) Measuring of safety voltage (B) Protection of equipment from ground faults (C) Discharging residual energies (D) All of the above

Last answer: Earthing switch is used for? (A) Measuring of safety voltage (B) Protection of equipment from ground faults (C) Discharging residual energies (D) All of the above

0 like 0 dislike

63 views 1 answer

asked May 2, 2020 by anonymous

Draw & explain touch plate switch using IC555.

Last answer: It is construct form monostable multivibrator , when metal plates touch by finger then voltage at pin number 2 goes to below 1/3 Vcc then output of lower comparator becomes high hence flip flop set and ... then output of timer goes low and it low till up to the metal plates touch by finger .

0 like 0 dislike

51 views 1 answer

asked Apr 27, 2020 by anonymous

Give the function of fuse and switch.

Last answer: Functions of fuse: * To break the circuit under fault condition. * To provide overcurrent protection to the circuit. * To provide short circuit protection to the circuit. * To provide ... * To make the electric circuit manually. * To break the electric circuit manually.

0 like 0 dislike

48 views 1 answer

asked Jul 30, 2019 by anonymous

State the function of : i) MCCB ii) ELCB iii) MCB iv) Switch.

Last answer: i) MCB: Provide short circuit protection & over load protection to electrical loads. ii) ELCB: Provides protection by detecting the unsafe magnitudes leakage currents flowing to earth and disconnecting ... rating. iv) Switch: Make and break the electrical connection to the load manually.

0 like 0 dislike

2.6k views 3 answers

asked Jul 6, 2019 by anonymous

Transfer switch

Last answer: .embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }

0 like 0 dislike

41 views 1 answer

asked Mar 21, 2018 by anonymous

The switch board instruments?

Last answer: The switch board instruments should be mounted in vertical position.

0 like 0 dislike

65 views 1 answer

asked Mar 20, 2018 by anonymous

Centrifugal switch disconnects the auxiliary winding of the motor at about what percent of synchronous speed?

Last answer: Centrifugal switch disconnects the auxiliary winding of the motor at about 70 to 80 percent of synchronous speed.

0 like 0 dislike

139 views 1 answer

asked Sep 21, 2017 by anonymous

when a thyristor conducts?

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

0 like 0 dislike

70 views 1 answer

asked Sep 21, 2017 by anonymous

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.

0 like 0 dislike

89 views 1 answer

asked Sep 21, 2017 by anonymous

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.

0 like 0 dislike

71 views 1 answer

asked Sep 10, 2017 by anonymous

what is thyristor commutation?

Last answer: Thyristor commutation means turning off thyristor.

0 like 0 dislike

110 views 1 answer

asked Sep 10, 2017 by anonymous

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.

0 like 0 dislike

928 views 1 answer

asked Sep 10, 2017 by anonymous

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.

1 like 0 dislike

603 views 1 answer

asked May 3, 2020 by anonymous

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.

0 like 0 dislike

172 views 1 answer

asked Sep 21, 2017 by anonymous

can we turn off thyristor using Gate?

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

0 like 0 dislike

69 views 1 answer

asked Sep 21, 2017 by anonymous

thyristor have how many terminals?

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

0 like 0 dislike

45 views 1 answer

asked Sep 10, 2017 by anonymous

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.

1 like 0 dislike

97 views 1 answer

asked Aug 9, 2017 by anonymous

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.

0 like 0 dislike

169 views 1 answer

asked Apr 30, 2018 by anonymous

A dc chopper is fed from a constant voltage mains the duty ratio of chopper is progressively increased while

A dc chopper is fed from a constant voltage mains the duty ratio of chopper is progressively increased while the chopper feeds an RL load. The per unit current ripple would (1) increase progressively (2) decrease progressively (3) decrease to a minimum value at α = 0.5 and then increase (4) increase to a maximum value at α = 0.5 and then decrease

Last answer: A dc chopper is fed from a constant voltage mains the duty ratio of chopper is progressively increased while the chopper feeds an RL load. The per unit current ripple would increase to a maximum value at α = 0.5 and then decrease

0 like 0 dislike

185 views 1 answer

anonymous · Answer 1 · 2018-03-06T10:05:21+0000

answered Mar 6, 2018 by anonymous

Yes, Thyristor is a DC switch.

anonymous · Answer 2 · 2018-03-07T06:31:22+0000

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

Is thyristor a DC switch?

Please log in or register to add a comment.

Please log in or register to answer this question.

2 Answers

Please log in or register to add a comment.

Please log in or register to add a comment.

Related questions