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Answer to Question #65921 in Electric Circuits for sharma

Question #65921
1. State, with reasons, whether the following statements are True or False.
i) Ideal voltage source has infinite internal resistance.
ii) Transformer is a passive device hence it cannot increase the voltage.
iii) Field effect transistor (FET) is a current controlled device.
iv) Forward biasing of a semiconductor junction diode reduces its energy band gap.
v) Amplifier with common collector mode offers maximum voltage gain.
vi) Ripple factor of a center tapped full wave rectifier is greater than that of a bridge
rectifier, which uses four diodes.
vii) Operational amplifier in non-inverting mode cannot amplify negative signals.
viii) IC LM380 is a small signal amplifier used to amplify the voltage.
ix) Largest decimal number represented by a 2-digit hex number is 99.
x) In a CRO sweep generator output is given to the vertical deflection plates.
Expert's answer
1. State, with reasons, whether the following statements are True or False.

i) Ideal voltage source has infinite internal resistance.

True

ii) Transformer is a passive device hence it cannot increase the voltage.

False

Transformer passive element, but it can increase voltage. (Step-up transformer)

iii) Field effect transistor (FET) is a current controlled device.

False

It’s voltage controlled device

iv) Forward biasing of a semiconductor junction diode reduces its energy band gap.

True

v) Amplifier with common collector mode offers maximum voltage gain.

False

vi) Ripple factor of a center tapped full wave rectifier is greater than that of a bridge

rectifier, which uses four diodes.

False

vii) Operational amplifier in non-inverting mode cannot amplify negative signals.

False

viii) IC LM380 is a small signal amplifier used to amplify the voltage.

True

ix) Largest decimal number represented by a 2-digit hex number is 99.

False

(255)

x) In a CRO sweep generator output is given to the vertical deflection plates.

False

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