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
A single phase ac – dc converter is also known as____________?
A single phase ac – dc converter is also known as____________?
A. rectifier
B. inverter
C. chopper
D. regulator
The output power of the cascaded amplifier / attenuator system can be determined using___________?
The output power of the cascaded amplifier / attenuator system can be determined using___________?
A. Actual gain of amplifier
B. Actual gain of amplifier and attenuator
C. Gain in dB of amplifier and attenuator
D. Actual gain of attenuator
If the gate voltage of an SCR is removed, then the_______________?
If the gate voltage of an SCR is removed, then the_______________?
A. anode current decreases
B. anode current does not decrease at all
C. anode current increases
D. cathode current increases
Anode of an operational SCR is _______________?
Anode of an operational SCR is _______________?
A. Always positive w.r.t cathode
B. Always negative w.r.t anode
C. Always positive w.r.t anode
D. Always negative w.r.t cathode
An SCR is made up of silicon because?
An SCR is made up of silicon because?
A. silicon has large leakage current than germanium
B. silicon has small leakage current than germanium
C. silicon has small leakage voltage than germanium
D. silicon has large leakage voltage than germanium
In a silicon controlled rectifier, the load is connected___________?
In a silicon controlled rectifier, the load is connected___________?
A. Across anode
B. In series with anode
C. Across cathode
D. In series with cathode
AC power in a load can be controlled by using____________?
AC power in a load can be controlled by using____________?
A. Two SCR’s in parallel opposition
B. Two SCR’s in series
C. Three SCR’s in series
D. Four SCR’s in series
Number of PN junction in an SCR is____________?
Number of PN junction in an SCR is____________?
A. Two
B. Three
C. Four
D. Five
The switching function of semiconductor devices can be characterized with___________?
The switching function of semiconductor devices can be characterized with___________?
A. Duty ratio only
B. Frequency only
C. Duty ratio and frequency
D. Duty ratio, frequency and time delay