A. 30° to 150°.
B. 30° to 180°.
C. 60° to 120°.
D. 60° to 180°.
Related Mcqs:
- In a 3 phase half wave rectifier, when firing angle is less than 90 degree, then the average dc output voltage becomes__________________?
A. Positive
B. Negative
C. Zero
D. None of these - The maximum firing angle in the half wave controlled regulator is_____________?
A. 180 degree
B. 190 degree
C. 200 degree
D. 210 degree - n a phase controlled 3 phase ac voltage controller, the harmonic present is__________?
A. 2nd
B. 3rd
C. 5th
D. 7th - 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 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. - With increase in firing angle,
A. Both harmonic distortion and quality of input current increases
B. Harmonic distortion increases and quality of input current decreases
C. Harmonic distortion decreases and quality of input current increases
D. Both harmonic distortion and quality of input current decreases - If the firing angle becomes negative, then the rectifier begins to work as_______________?
A. A rectifier
B. An inverter
C. A chopper
D. A regulator - In a three phase voltage source inverters____________?
A. Only amplitude of voltage is controllable
B. Only phase is controllable
C. Both amplitude and phase is controllable
D. Amplitude, phase and frequency of voltages should always be controllable - A capacitive load in voltage source inverters generates ________________?
A. Small current spikes and can be reduced by using an inductive filter
B. Large current spikes and can be increased by using an inductive filter
C. Small current spikes and can be increased by using an inductive filter
D. Large current spikes and can be reduced by using an inductive filter - In a single phase full wave rectifier, during blocking state the pea inverse voltage of diode is______________?
A. V m
B. 2 V m
C. V m / 2
D. 4 V m
