In a single phase full wave regulator feeding an R-L load, the power factor angl

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Question
In a single phase full wave regulator feeding an R-L load, the power factor angle of load is ?. The range of control of firing angle a is
Options
A. 0 ? a ? p
B. ? ? a ? p
C. 0 ? a ? (p - ?)
D. ? ? a ? (p + ?)

Correct Answer

? ? a ? p

More questions

1. The antenna current of an AM transmitter is 8 A, when only the carrier is sent, but it increases to 8.93 A when the carrier is modulated by a single sine wave. Determine the antenna current when the percent of modulation changes to 0.8
Options
A. 9.19 A
B. 9.91 A
C. 10.56 A
D. 8.61 A

2. A full wave rectifier type meter is used to measure the wave shape shown in figure. The voltmeter is calibrated to read rms value of sine wave. The reading of voltmeter will be
Options
A.
B.
C. 100 V
D. 111 V

4. Work function of oxide coated cathode is much lower than that of tungsten cathode.
Options
A. True
B. False

5. Which of the following is not a valid real constant in C?
Options
A. 426
B. 321.0
C. -621.231
D. +201.2314

6. The usable bandwidth of ridge wave guide
Options
A. is lower than that of rectangular waveguide
B. is higher than that of rectangular waveguide
C. is almost same as that of rectangular waveguide
D. is very small as compared to that of rectangular waveguide

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Options
A. 100 MHz
B. 50 MHz
C. 12.5 MHz
D. 6.25 MHz

10. For very low frequencies, v₀/v_i in the given figure equals
Options
A. 1
B. 0
C. ?
D. 0.5

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