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1 A CE amplifier has resistor RF connected 
2
With the increase of the reverse bias in a p-n diode, the reverse current :
3
The transistor as shown in the circuit is operating in:
4
A monostable multivibrator is frequently used:
5
When two identical stages with upper cutoff frequency
| ω |
H
are cascaded, overall cutoff frequency is at
6
Low frequency response of RC coupled amplifier can be improved by:
7
In order to increase the bandwidth of tuned amplifiers, one can use:
1. Tuned circuit with inductance having high Q factor
2. Double tuned amplifier with two tuned circuits coupled by mutual inductance
3. Staggered tuned amplifiers in which different tuned circuits which are cascaded are tuned to slightly different frequencies
8
The amplifier A shown in the figure has open loop gain of 100, input impedance Zi of 1 kΩ and output impedance Zo of 100 Ω . If a negative feedback factorβ 0.99 is used, the new values of Zi and Zo are respectively:
9
The amplifier A shown in the figure has open loop gain of 100, input impedance Zi of 1 kΩ and output impedance Zo of 100 Ω . If a negative feedback factorβ 0.99 is used, the new values of Zi and Zo are respectively:
10
A 5 mV, 1 kHz sinusoidal signal is applied to the input of an OP-AMP integrator for which R=100 kΩ and C=1 Fμ . The output voltage is
11
A series RLC circuit has ω0 =105, Q=50, R= 400Ω. The value of C is
12
The voltage gain of an amplifier is 100. A negative feedback is applied with
| β |
=
0.03. The overall gain of the amplifier is:
13
The open loop transfer function of an amplifier with resistive negative feedback has two poles in the left half s-plane. Then the amplifier: