For an SCR gate – cathode characteristic is a straight line of 130. For triggered source volume of 15 V and allowable gate power dissipation of 0.5 W compute the gate source resistance_____? A. 111.9 Ω. B. 11.19 Ω. C.…
In forward blocking mode of a thyristor________? A. junction J2 is in reverse bias and J1, J3 is in forward bias. B. junction J3 is in forward bias and J1, J2 is in reverse bias. C. Junction J1, J3 is…
In reverse blocking mode of a thyristor______? A. junction J2 is in reverse bias and J1, J3 is in forward bias. B. junction J3 is in forward bias and J1, J2 in reverse bias.C. junction J1, J3 is in reverse…
If holding current of a thyristor is 2 mA then latching current should be_____? A. 0.01 A. B. 0.002 A. C. 0.009 A.D. 0.004 A.
Which statement is true for latching current ___________? A.It is related to turn off process of the device. B. It is related to conduction process of device.C. It is related to turn on process of the device. D. Both C…
A step up chopper has input voltage 110 V and output voltage 150 V. The value of duty cycle is_____? A. 0.32 B. 0.67 C. 0.45D. 0.27
A single phase one pulse controlled circuit has a resistance R and counter emf E load 400 sin(314 t) as the source voltage. For a load counter emf of 200 V, the range of firing angle control is _____? A.…
A single phase full bridge inverter can operated in load commutation mode in case load consist of______? A. RL.B. RLC underdamped. C. RLC overdamped. D. RLC critically damped
An SCR is considered to be a semi controlled device because_______? A. it can be turned OFF but not ON with a gate pulse. B. it conducts only during one half cycle of an alternating current wave.C. it can be…
The typical value of SCR for modern alternator is____________? A. 1.5.B. 0.5. C. 1.0. D. 1.2.