Electronics and Communication Engineering - Analog Electronics

46. 

Saturation region of a JFET is also known as

A. source region
B. analog region
C. pinch off region
D. ohmic region

Answer: Option D

Explanation:

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47. 

Which junction transistor is preferred for high input and low output impedances?

A. Common emitter
B. Common base
C. Common collector
D. Any of the above

Answer: Option C

Explanation:

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48. 

For operation of enhancement only N-channel MOSFET, value of gate voltage has to be

A. zero
B. low positive
C. high negative
D. high positive

Answer: Option D

Explanation:

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49. 

Sweep voltage generators, sweep current generators, multivibrators and blocking oscillators can be combined as

A. negative resistance oscillators
B. tuned base tuned collector oscillators
C. relaxation oscillators
D. L-C tuned oscillators

Answer: Option C

Explanation:

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50. 

A generator with an internal resistance of 600 Ω drives an amplifier whose input resistance is 400 Ω. The generator's open circuit voltages is 1 mV; the amplifier develops 100mV across an 8kΩ load. The voltage multiplication is

A. 25
B. 50
C. 125
D. 250

Answer: Option D

Explanation:

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