In a power diode the reverse recovery time is the time from the instant the forw

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Question
In a power diode the reverse recovery time is the time from the instant the forward current is zero to the instant when reverse recovery current has decayed to
Options
A. 50% of peak reverse current
B. 25% of peak reverse current
C. 10% of peak reverse current
D. zero value

Correct Answer

50% of peak reverse current

More questions

1. Performance of a PIN diode switch is represented by
Options
A. insertion loss when switch is off
B. insertion loss when switch is on
C. insertion loss when switch is on and isolation loss when switch is off
D. insertion loss when switch is off and isolation loss when switch is on

2. In a single phase full wave converter (M-2 connection) feeding on R - L load, the input voltage is v = V_m sin ?t. The expression for dc output voltage is
Options
A.
B.
C.
D.

4. If f is the frequency of electromagnetic wave, f_c is cutoff frequency, then in a rectangular waveguide
Options
A. attenuation is low when f > f_c
B. attenuation is low when f < f_c
C. attenuation is high when f < f_c
D. either (b) or (c)

5. A parallel polarized wave is incident from air into paraffin having relative permittivity 3, the value of its Brewster angle is
Options
A. 0°
B. 30°
C. 45°
D. 60°

6. For a permanent magnetic material
Options
A. the residual induction and coercive field should be large
B. the residual induction and coercive field should be small
C. area of hysteresis loop should be small
D. initial relative permeability should be high

10. In a specimen of ferromagnetic material, as the flux density is increased from zero to 2.5 T, µ_r will
Options
A. increase
B. decrease
C. first decrease then increase
D. first increase then decrease

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