Physics of Semiconductors Test

Result

Physics of Semiconductors Test - 1

Score
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Rank
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TIME Taken - -

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Weekly Quiz Competition

Question 1
1 / -0

Compared to CB amplifier, CE amplifier has

A
low input resistance

B
low output resistance

C
low current amplification

D
infinite current amplification
Solution
Among the different configurations of transistors CC (common collector), CE (common emitter) and CB (common base), the common emitter (CE) configuration transistor has the following advantages.
- High input resistance
- Low output resistance
- More efficiency
- More current amplification
- More voltage amplification
Question 2
1 / -0

The following question has four choices, out of which ONLY ONE is correct.

In a broacasting studio, a 1000 kHz carrier wave is modulated by an audio signal of frequency range 100-5000 Hz. The width of the channel (in kHz) is

A
4900 Hz

B
4500 Hz

C
4000 Hz

D
3500 Hz

Solution

Frequency of sidebands = 5000 - 100 = 4900 Hz