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i) In L-C-R circuit, the current and voltage are in same phase only at a single
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
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.
move a positive 2μC charge once along the circumference of the circle, will any
work be done in the process? Justify your answer.
point A to point B is given by:
W E.d r
Show that the value of the line integral of the electric field (right hand side of the
above equation) does not depend on the path taken to move the unit positive charge
from point A to B.
b) Design and draw the circuit of a voltage regulator using LM 317 to provide an adjustable voltage between 6 to 12V.