# Questions & Answers of Characteristics of Diodes, BJT, MOSFET

Question No. 133

The sinusoidal ac source in the figure has an rms value of $\frac{20}{\sqrt{2}}$  V. Considering all possible values of RL, the minimum value of RS in Ω to avoid burnout of the Zener diode is _________.

Question No. 139

Assuming the diodes to be ideal in the figure, for the output to be clipped, the input voltage vi must be outside the range

Question No. 145

A 10 kHz even-symmetric square wave is passed through a bandpass filter with centre frequency at 30 kHz and 3 dB passband of 6 kHz. The filter output is

Question No. 27

In the circuit shown below, the knee current of the ideal Zener diode is 10 mA. To maintain 5 V across RL, the minimum value of RL in $\Omega$ and the minimum power rating of the Zener diode in mW respectively are

Question No. 31

A voltage $1000\mathrm{sin}\omega t$ Volts is applied across YZ. Assuming ideal diodes, the voltage measured across WX in Volts is

Question No. 18

The i-v characteristics of the diode in the circuit given below are

The current in the circuit is

Question No. 35

The transistor used in the circuit shown below has a β of 30 and ICBO  is negligible

If the forward voltage drop of diode is 0.7V, then the current through collector will be

Question No. 47

A clipper circuit is shown below.

Assuming forward voltage drops of the diodes to be 0.7 V, the input-output transfer characteristics of the circuit is

Question No. 24

Figure shows a composite switch consisting of a power transistor (BJT) in series with a diode. Assuming that the transistor switch and the diode are ideal, the I-V characteristic of the composite switch is

Question No. 8

The equivalent circuits of a diode, during forward biased and reverse biased conditions, are shown in the figure.

If such a diode is used in clipper circuit of figure given above, the output voltage V0 of the circuit will be(A)(A)

 (A) (B) (C) (D)