Exercise: Analog Electronics

Questions for: Analog Electronics

The most widely used LC oscillator is
A:
Hartley oscillator
B:
Crystal oscillator
C:
Colpitt's oscillator
D:
Clapp's oscillator
Answer: A
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Assertion (A): In monolithic IC the components are part of one chip

Reason (R): An op-amp is a high gain dc amplifier

A:
Both A and R are correct and R is correct explanation for A
B:
Both A and R are correct but R is not correct explanation for A
C:
A is correct R is wrong
D:
A is wrong R is correct
Answer: B
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When a transistor is to be at a temperature above 25°C
A:
smaller heat sink be provided
B:
maximum power rating be derated
C:
biasing circuit must be strengthened
D:
earth connections must be connected through a resistor
Answer: B
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In amplifiers, the parasitic oscillation result due to
A:
transistor inter junction capacitance
B:
push pull operator
C:
negative feedback
D:
poor inter-stage coupling
Answer: A
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For the circuit shown in the figure, the capacitor C is initially uncharged. At t = 0, the switch S is closed. The voltage Vc across the capacitor at t = 1 millisecond is (In the figure shown above, the op-amp is supplied with ± 15 V and the ground has been shown by the symbol)
A:
0 V
B:
6.3 V
C:
9.45 volts
D:
10 volts
Answer: D
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