Divide 1161₈ by 31₈. Express the obtained result in decimal number.

Which parameters of an op-amp become significant for a fast varying ultra low input voltage signal? What should be the values of these parameters for a triangular wave signal of ±5 mV peak to peak with 50 MHz frequency given to a unity gain op-amp amplifier?

Prove that the LC band pass filter is a constant K type filter

Explain the Barkhausen criterion for sustained oscillation. How is it satisfied in the

phase-shift oscillator circuit?

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 basng of a semconductor 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.

Design a zener regulated power supply to give 9.1V DC output with maximum load current of 50 mA. Assume that the minimum I_Z required for proper functioning of zener diode is 5 mA, and the unregulated DC input is 12V. Indicate the value of RS

and power ratings of zener diode and RS.

Why are tuned amplifiers preferred at radio frequency? Based on their frequency

response, compare the single and double tuned RF amplifiers.