Chapter 19: Problem 2641
Zener diode is used as (A) Full. wave rectifier (B) amplifier (C) A.C. voltage regulator (D) D.C. voltage regulator
Over 30 million students worldwide already upgrade their learning with Vaia!
All the tools & learning materials you need for study success - in one app.
Get started for free
A light emitting diode has a voltage drop of \(2 \mathrm{~V}\) across it when \(10 \mathrm{~mA}\) current is passed. If this \(\mathrm{LED}\) is to be operated with \(6 \mathrm{~V}\) battery the value of limiting resistor would be (A) \(400 \Omega\) (B) \(4000 \Omega\) (C) \(40 \mathrm{k} \Omega\) (D) \(300 \Omega\)
A n-p-n transistor is used in common emitter made in an amplifier it. A change of \(40 \mu \mathrm{A}\) in the base current changes the output current by $2 \mathrm{~mA}\( and \)0.04 \mathrm{~V}$ in input voltage. If a load of \(6 \mathrm{k} \Omega\) is used, then the voltage gain of the amplifier is (A) 100 (B) 200 (C) 300 (D) 400
The load voltage is approximately constant when a zener diode is (A) Forward biased (B) Reverse biased (C) Operating in breakdown region (D) Unbiased
The ratio of concentration of electrons and holes in a semi-conductor is $(7 / 5)\( and the ratio of currents is \)(7 / 4)$, then what is the ratio of their drift velocities? (A) \((4 / 5)\) (B) \((5 / 6)\) (C) \((4 / 5)\) (D) \((5 / 4)\)
A zener diode used as voltage regulator is connected (i) in forward bias (ii) in reverse bias (iii) in parallel with load (iv) in series with load (A) (i) and (ii) are correct (B) (ii) and (iii) are correct (C) only (i) is correct (D) only (iv) is correct
What do you think about this solution?
We value your feedback to improve our textbook solutions.
