Electric Circuits Answers

State, with reasons, whether the following statements are True or False
In a CRO the signal input voltage is given to the horizontal deflection plates

State, with reasons, whether the following statements are True or False
Highest Modulus of the ring counter made up of 5 flip-flops is 25

State, with reasons, whether the following statements are True or False
IC 7805 and IC 7905 must always be used together

State, with reasons, whether the following statements are True or False
Amplifier with common emitter mode offers maximum current gain

State, with reasons, whether the following statements are True or False
Reverse biasing of a semiconductor junction diode increases its energy band gap

State, with reasons, whether the following statements are True or False
Suppressor grid in pentode is kept at anode potential

State, with reasons, whether the following statements are True or False. 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.

Explain the working of J-K flip flop. How does it differ from R-S flip flop?

xplain the Barkhausen criterion for sustained oscillation. How is it satisfied in the phase-shift oscillator circuit?