How to Clean Car Battery Terminals
Last Answer : How to Clean Car Battery Terminals How to Paint a Car One of the most common causes of false starts and poor performance in many automobiles is when car battery terminals get dirty or corroded. ... these simple steps, you never have to pay big money to replace your battery and terminals again.
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1 answer
asked
May 11, 2021
by
anonymous

The number of terminals present in IGBT is A) 2 B) 3 C) 4 D) 5
Last Answer : The number of terminals present in IGBT is 3
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83 views
1 answer
asked
Jun 18, 2018
by
anonymous

If an unsymmetrical line to ground fault occurs at the secondary terminals of a delta/star, ungrounded transformer, then (A) zero sequence currents are present on both sides of the transformer (B) ... side (D) zero sequence currents are present on the primary side but not on the secondary side
Last Answer : If an unsymmetrical line to ground fault occurs at the secondary terminals of a delta/star, ungrounded transformer, then zero sequence currents are absent on both sides of the transformer
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229 views
1 answer
asked
Apr 29, 2018
by
anonymous

A network is said to be under resonance when the voltage and the current at the network input terminals are (A) in phase (B) out of phase (C) in phase quadrature (D) in phase, and have equal magnitudes
Last Answer : A network is said to be under resonance when the voltage and the current at the network input terminals are in phase
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1 answer
asked
Apr 28, 2018
by
anonymous
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Last Answer : Service mains are the conductors, which connect the consumer's terminals to the distribution.
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194 views
1 answer
asked
Mar 20, 2018
by
anonymous
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A MOSFET has how many terminals?
Last Answer : A MOSFET having three terminals 1st one is Gate (insulated), 2nd one is Source and 3rd one is Drain.
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3 answers
asked
Mar 19, 2018
by
anonymous
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Last Answer : BJT have three terminals Base, emitter and collector.
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121 views
1 answer
asked
Sep 21, 2017
by
anonymous

Last Answer : Diode have two terminals.
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4 answers
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.
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1 answer
asked
Sep 10, 2017
by
anonymous

Last Answer : Thyristor commutation means turning off thyristor.
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145 views
1 answer
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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.
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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.
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918 views
1 answer
asked
Sep 10, 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.
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368 views
1 answer
asked
May 3, 2020
by
anonymous
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Thyristor can be protected from over voltages by using
Last Answer : Thyristor can be protected from over voltages by using Voltage clamping device
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108 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.
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211 views
1 answer
asked
May 8, 2018
by
anonymous

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

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

What is thyristor family?
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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.
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235 views
1 answer
asked
Mar 19, 2018
by
anonymous

What is the use of a thyristor in a circuit?
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2.9k views
0 answers
asked
Mar 19, 2018
by
anonymous

What is a reverse conducting thyristor?
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0 answers
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Mar 19, 2018
by
anonymous

What is the function of a thyristor?
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0 answers
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Mar 19, 2018
by
anonymous

Why SCR is called as thyristor?
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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.
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162 views
1 answer
asked
Mar 19, 2018
by
anonymous

How is a thyristor used to convert AC to DC?
Last Answer : thyristor
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123 views
1 answer
asked
Mar 19, 2018
by
anonymous
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What is the application of thyristor?
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0 answers
asked
Mar 19, 2018
by
anonymous

Last Answer : Yes ,it is one of the main advantage using thristors as a switch in DC circuit ,it has a high current gain
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161 views
2 answers
asked
Mar 6, 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.
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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.
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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
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888 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.
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107 views
2 answers
asked
Nov 15, 2017
by
anonymous

Last Answer : By using some circuit the forward DC current of thyristor is forced to zero is called forced commutation.
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119 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.
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110 views
1 answer
asked
Sep 21, 2017
by
anonymous

Last Answer : No we cannot turn off normal thyristor using Gate.
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93 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.
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97 views
1 answer
asked
Sep 21, 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.
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203 views
1 answer
asked
Aug 9, 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).
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1.7k views
1 answer
asked
Aug 8, 2017
by
anonymous
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Thyristor controlled phase angle regulator
Last Answer : Thyristor controlled phase angle regulator
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196 views
1 answer
asked
Oct 12, 2017
by
pavan

what is TCSC?
Last Answer : Thyristor Controlled Series Capacitor (TCSC)
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224 views
1 answer
asked
Aug 8, 2017
by
anonymous

60 views
0 answers
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Apr 1, 2020
by
anonymous

46 views
0 answers
asked
Mar 27, 2020
by
anonymous

What is the difference between SCR and thyristor?
Last Answer : SCR is a type of thyristor. Like GTO, IGCT, MCT, TRIAC, DIAC etc. are the types of thyristor.
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2.7k views
2 answers
asked
Jul 6, 2019
by
anonymous

111 views
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Dec 20, 2018
by
anonymous

72 views
0 answers
asked
Sep 21, 2018
by
anonymous

The turn-off time of a thyristor is 30 is at 50°C. What is its turn-off time at 100°C ?
Last Answer : The turn-off time of a thyristor is 30 is at 50°C. What is its turn-off time at 100°C ? 60 microsecond
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126 views
1 answer
asked
Apr 25, 2018
by
anonymous

During forward blocking state, a thyristor is associated with . (A) Large current and low voltage (B) Low current and large voltage (C) Medium current and large voltage (D) None of the above
Last Answer : A
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1.3k views
1 answer
asked
Apr 14, 2018
by
anonymous

In thyristor. holding current is (A) More than the latching current (B) Less than the latching current (C) Equal to latching current (D) None of the above
Last Answer : In thyristor. holding current is less than the latching current
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452 views
1 answer
asked
Apr 14, 2018
by
anonymous

A single phase fully controlled thyristor bridge ac -dc converter is operating at a firing angle of 25 degree and an overlap angle 10 degree with constant dc output current of 20A. The fundamental power factor (displacement factor) at input ac mains is : (A) 0.78 (B) 0.827 (C) 0.866 (0) 0.9
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159 views
0 answers
asked
Apr 14, 2018
by
anonymous

The typical ratio of latching current to holding current in a 20A thyristor is : (A) 5.0 (B) 2.0 (C) 1.0 (D) 0.5
Last Answer : The typical ratio of latching current to holding current in a 20 A thyristor is 2.0
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1.3k views
1 answer
asked
Apr 14, 2018
by
anonymous
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A thyristor power converter is said to be in discontinuous when: (A) The load current is zero even though the load voltage is present. (B) Both load voltage and load current are zero simultaneously ... load current is present even though load voltage is zero. (D) When load current is ripple free.
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109 views
0 answers
asked
Apr 5, 2018
by
anonymous
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