The input signal given to a CE amplifier having a voltage gain of 150 is . The corresponding output signal will be:
1.
2.
3.
4.
In a CE transistor amplifier, the audio signal voltage across the resistance of 2 k is 2V. If the base resistance is 1 k and the current amplification of the transistor is 100, the input signal voltage is:
1. 0.1 V
2. 1.0 V
3. 1 mV
4. 10 mV
Transfer characteristics [output voltage () vs input voltage ()] for a base biased transistor in CE configurations are as shown in the figure. For using the transistor as a switch, it is used:
1. In region III
2. Both in the region (I) and (III)
3. In region II
4. In region I
A transistor is operated in a common emitter configuration at Vc =2 V such that a change in the base current from 100 to 300 produces a change in the collector current from 10 mA to 20mA. The current gain is:
1. 75
2. 100
3. 25
4. 50
The device that can act as a complete electronic circuit is:
1. Junction diode
2. Integrated circuit
3. Junction transistor
4. Zener diode
A common emitter amplifier has a voltage gain of 50, an input impedance of 100 Ω and an output impedance of 200 Ω. The power gain of the amplifier is:
1. 500
2. 1000
3. 1250
4. 50
The voltage gain of an amplifier with 9% negative feedback is 10. The voltage gain without feedback will be:
1. 90
2. 10
3. 1.25
4. 100