Electronic Devices Circuits Pn Diode Switching Times Online Exam Quiz
Electronic Devices Circuits Pn Diode Switching Times GK Quiz. Question and Answers related to Electronic Devices Circuits Pn Diode Switching Times. MCQ (Multiple Choice Questions with answers about Electronic Devices Circuits Pn Diode Switching Times
A PN junction diode with 100? resistor is forward biased such that 100A current flows. If voltage across this combination is instantaneously reversed to 10V at t=0, the reverse current that flows through diode at t=0 is?
Options
A : 10mA
B : 100mA
C : -100mA
D : -10mA
The switch is at position shown in the figure initially and steady state is from t=0 to t=to. The switch suddenly is thrown to the other position. The current flowing through the 10K resistor from t=0 is?
Options
A : 1mA
B : 2mA
C : -2mA
D : -1mA
Time taken for a diode to reach 90% of its final value when switched from steady state is______
Options
A : 2.3*time constant
B : 2.2*time constant
C : 1.5*time constant
D : equals the time constant
In a circuit below, the switch is at position 1 at t<0 and at position 2 when t=0. Assume diode has zero voltage drop and storage time. For 0<t<ts, the VR at 1k ohm resistor is given by_____
Options
A : 5V
B : -5V
C : 0v
D : 10V
Diode acts as a short circuit when switched from forward to reverse bias for some time due to______
Options
A : Accumulation of minority charge carriers when it’s in forward bias
B : Accumulation of majority charge carriers when it’s in forward bias
C : Accumulation of minority charge carriers when it’s in reverse bias
D : Accumulation of majority charge carrier when it’s in reverse bias
The delay time can be reduced by?
Options
A : decreasing lifetime and increasing ratio of reverse to forward current
B : increasing lifetime and decreasing ratio of reverse to forward current
C : increasing lifetime and increasing ratio of reverse to forward current
D : decreasing lifetime and decreasing ratio of reverse to forward current
Switching speed of P+ junction depends on.
Options
A : Mobility of minority carriers in P junction
B : Life time of minority carriers in P junction
C : Mobility of majority carriers in N junction
D : Life time of minority carriers in N junction
The delay in switching between the ON and OFF states is due to _________
Options
A : The time required to change amount of excess minority carriers stored in quasi-neutral regions
B : The time required to change amount of excess majority carriers stored in quasi-neutral regions
C : The conduction between storage time and recovery time
D : The exponential increase in carriers in N region
Reverse recovery time for a diode is?
Options
A : Time taken to eliminate excess minority charge carriers
B : Sum of storage time (TS) and transition time (TT)
C : Time taken to eliminate excess majority charge carriers
D : Time elapsed to return to non conduction state
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