Related Questions

In superhetrodyne receiver, the input at mixer stage is ___________
A IF and RF
B RF and AF
C IF and AF
D RF and local oscillator signal
In a superhetrodyne receiver, the difference frequency is chosen as the IF rather than the sum frequency because ___________
A The difference frequency is closer to oscillator frequency
B Lower frequencies are easier to amplify
C Only the difference frequency can be modulated
D None of the above
The superhetrodyne principle provides selectivity at ___________ stage
A RF
B IF
C audio
D Before RF
A radio receiver has ___________ of amplification
A One stage
B Two stages
C Three stages
D More than one stages
Four defensive football players are chasing the opposing wide receiver, who has the ball. Calvin is directly behind the ball carrier. Jenkins and Burton are side by side behind Calvin. Zeller is behind Jenkins and Burton. Calvin tries for the tackle but misses and falls. Burton trips. Which defensive player tackles the receiver?
A Burton
B Zeller
C Jenkins
D Calvin
For a two stage compressor, if index of compression for higher stage is greater than index of compression for lower stage, then the optimum pressure as compared to ideal case will
A Increase
B Decrease
C Remain unaffected
D Other factors control it
RC coupling is used for ___________ amplification
A Voltage
B Current
C Power
D None of the above
Transformer coupling is used for ___________ amplification
A Power
B Voltage
C Current
D None of the above
For faithful amplification by a transistor circuit, the value of VBE should ___________ for a silicon transistor
A Be zero
B Be 0.01 V
C Not fall below 0.7 V
D Be between 0 V and 0.1 V
For proper amplification by a transistor circuit, the operating point should be located at the ___________ of the d.c. load line
A The end point
B Middle
C The maximum current point
D None of the above

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