A. Continuous signal
B. Large isolating pulse transformer
C. A train of pulses
D. None of these
Related Mcqs:
- 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. 108 Ω.
D. 115 Ω - A single phase full bridge inverter can operate in load commutation mode in case load consists of____________?
A. RL.
B. RLC underdamped.
C. RLC overdamped.
D. RLC critically damped. - The maximum firing angle in the half wave controlled regulator is_____________?
A. 180 degree
B. 190 degree
C. 200 degree
D. 210 degree - Regulator sampling PWM is usually used in___________?
A. High power inverters
B. Rectifiers
C. Low power inverters
D. Only A. and B. - 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 - 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. 30° to 150°.
B. 30° to 180°.
C. 60° to 120°.
D. 60° to 180°. - Gate circuit or triggering circuit of a thyristor is
A. lower power circuit.
B. high power circuit.
C. magnetic circuit.
D. may be low power or high power circuit - During gate recovery time_____________?
A. charge carriers of J2 junction recombined
B. charge carriers of J2 junction is swept out
C. charge carrier of J1 junction removed
D. charge carriers of J3 junction is removed - With gate open, the maximum anode current at which SCR is turned off from ON condition is called____________?
A. breakdown voltage
B. peak reverse voltage
C. holding current
D. latching current - The phase angle of gate signal in TRIAC can be shifted by using_____________?
A. A capacitor
B. A variable resistor
C. An inductor
D. Only (a) and (b)
