For the CE transistor amplifier, the audio signal voltage across the collector resistance of 2k is 4V. If the current amplification factor of the transistor is 100 and the base resistance is 1k, then the input signal voltage is:
1. 10 mV
2. 20 mV
3. 30 mV
4. 15 mV
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