How is a thyristor used to convert AC to DC?
Last Answer : thyristor
Show More
123 views
1 answer
asked
Mar 19, 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
Show More
107 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.
Show More
211 views
1 answer
asked
May 8, 2018
by
anonymous

What is a phase control thyristor?
Show More
153 views
0 answers
asked
Mar 19, 2018
by
anonymous

Why thyristor are not preferred for inverter?
Show More
454 views
0 answers
asked
Mar 19, 2018
by
anonymous

What is thyristor family?
Show More
67 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.
Show More
230 views
1 answer
asked
Mar 19, 2018
by
anonymous
.jpg)
What is the use of a thyristor in a circuit?
Show More
2.9k views
0 answers
asked
Mar 19, 2018
by
anonymous

What is a reverse conducting thyristor?
Show More
84 views
0 answers
asked
Mar 19, 2018
by
anonymous

What is the function of a thyristor?
Show More
92 views
0 answers
asked
Mar 19, 2018
by
anonymous

Why SCR is called as thyristor?
Show More
97 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.
Show More
161 views
1 answer
asked
Mar 19, 2018
by
anonymous

What is the application of thyristor?
Show More
90 views
0 answers
asked
Mar 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.
Show More
3.0k views
1 answer
asked
Feb 19, 2018
by
anonymous

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.
Show More
300 views
1 answer
asked
Dec 7, 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
Show More
886 views
2 answers
asked
Dec 6, 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.
Show More
107 views
2 answers
asked
Nov 15, 2017
by
anonymous

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).
Show More
1.7k views
1 answer
asked
Aug 8, 2017
by
anonymous

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
Show More
89 views
1 answer
asked
Apr 28, 2018
by
anonymous

Last Answer : Yes, SCR is a unidirectional switch.
Show More
78 views
1 answer
asked
Mar 6, 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.
Show More
1.2k views
1 answer
asked
Feb 5, 2018
by
anonymous

Last Answer : Because it has a higher switching frequency and heat tolerance.
Show More
143 views
1 answer
asked
Sep 15, 2017
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.
Show More
368 views
1 answer
asked
May 3, 2020
by
anonymous

Last Answer : By using some circuit the forward DC current of thyristor is forced to zero is called forced commutation.
Show More
115 views
1 answer
asked
Sep 21, 2017
by
anonymous

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.
Show More
108 views
1 answer
asked
Sep 21, 2017
by
anonymous

Last Answer : No we cannot turn off normal thyristor using Gate.
Show More
92 views
1 answer
asked
Sep 21, 2017
by
anonymous

Last Answer : Thyristor conducts when the anode voltage is greater than cathode and when the current provided to Gate.
Show More
96 views
1 answer
asked
Sep 21, 2017
by
anonymous

Last Answer : Thyristor have three terminals anode, cathode and Gate.
Show More
58 views
1 answer
asked
Sep 21, 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.
Show More
134 views
1 answer
asked
Sep 10, 2017
by
anonymous
.jpg)
Last Answer : Thyristor commutation means turning off thyristor.
Show More
145 views
1 answer
asked
Sep 10, 2017
by
anonymous

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.
Show More
1.1k views
1 answer
asked
Sep 10, 2017
by
anonymous

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.
Show More
915 views
1 answer
asked
Sep 10, 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.
Show More
202 views
1 answer
asked
Aug 9, 2017
by
anonymous

Should I switch to a credit union?
Last Answer : I switched from a bank to a credit union a long time ago. Competitive interest rates, fewer fees, easier loan approvals, better customer service.
Show More
2 views
1 answer
asked
Feb 28
by
anonymous

How to Replace a Light Switch
Last Answer : How to Replace a Light Switch They say it only takes one idiot to change a light bulb, but to change a light switch requires the skill and carefulness of a handyman. If you have a malfunctioning or a ... doesn't have to be a hassle. Just remember these steps and switching a new switch will be easy.
Show More
9 views
1 answer
asked
May 15, 2021
by
anonymous
.jpg)
How to Install a Timer Switch
Last Answer : How to Install a Timer Switch A timer switch is a handy device that automatically turns off a switch after a fixed period of time. This is particularly useful when you have kids at home ... safety precautions when installing switches or anything that might put you in the direct path of electricity.
Show More
8 views
1 answer
asked
May 14, 2021
by
anonymous

How To Install A Dimmer Switch
Last Answer : How To Install A Dimmer Switch Having a room with a bright light is good, but there are instances when you need the lights to be lower than what you're accustomed. You need to have a dimmer switch, ... your home. Follow them properly, and you'll be able to fiddle with the light levels in your home.
Show More
7 views
1 answer
asked
May 14, 2021
by
anonymous

How to Wire a Three-Way Switch ?
Last Answer : How to Wire a Three-Way Switch A three-way switch is the most common system installed in residential areas. This system is used to control a light and receptacle or more from two different switches ... wires for interior use. #14 wires are suggested to be used for protected circuits at 15 amperes.
Show More
12 views
1 answer
asked
May 9, 2021
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 .
Show More
74 views
1 answer
asked
May 2, 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.
Show More
120 views
1 answer
asked
Apr 27, 2020
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.
Show More
2.7k views
3 answers
asked
Jul 30, 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%; }
Show More
59 views
1 answer
asked
Jul 6, 2019
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.
Show More
331 views
1 answer
asked
Sep 20, 2018
by
anonymous

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
Show More
113 views
1 answer
asked
May 8, 2018
by
anonymous

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
Show More
186 views
1 answer
asked
Apr 28, 2018
by
anonymous

A closed switch has a resistance of?
Last Answer : A closed switch has a resistance of zero.
Show More
140 views
1 answer
asked
Mar 25, 2018
by
anonymous

Last Answer : The switch board instruments should be mounted in vertical position.
Show More
90 views
1 answer
asked
Mar 21, 2018
by
anonymous

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.
Show More
169 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : Centrifugal switch disconnects the auxiliary winding of the motor at about 70 to 80 percent of synchronous speed.
Show More
222 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : In a single phase motor the centrifugal switch disconnects auxiliary winding of the motor.
Show More
269 views
1 answer
asked
Mar 20, 2018
by
anonymous
