Answer to Question #79767 in Electric Circuits for Manisha

Question

State, with reasons, whether the following statements are True or False. (2×10)
i) In L-C-R circuit, the current and voltage are in same phase only at a single
frequency.
ii) Suppressor grid in pentode is kept at anode potential.
iii) Bipolar junction transistor (BJT) is a voltage controlled device.
iv) Reverse biasing of a semiconductor junction diode increases its energy band gap.
v) Amplifier with common emitter mode offers maximum current gain.
vi) Rectification efficiency is proportional to the number of diodes used in a rectifier
circuit.
vii) Slew rate of an op-amp influences its frequency response.
viii) IC 7805 and IC 7905 must always be used together.
ix) Highest Modulus of the ring counter made up of 5 flip-flops is 25.
x) In a CRO the signal input voltage is given to the horizontal deflection plates.

Answer 1

i. True
ii. False
iii. False
iv. True
v. True
vi. False
vii. True
viii. False
ix. False
x. False