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Assertion (A): In a differential amplifier the current through common emitter resistor is called tail current Reason (R): CMRR of an op-amp indicates how a differential signal amplified | |
A. | Both A and R are correct and R is correct explanation for A [Wrong Answer] |
B. | Both A and R are correct but R is not correct explanation for A [Wrong Answer] |
C. | A is correct R is wrong [Correct Answer] |
D. | A is wrong R is correct [Wrong Answer] |
View Answer
Explanation:-
Answer : C Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
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5 to 10
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6 bits
8 bits
12 bits
16 bits
⇒ A Hartley oscillator uses FET with g_{m} of 2 ms and r_{d} = 2 KΩ. The total coil inductance is 10 μH with turns ratio of input to output side of 1 : 10. It is tuned with a 50 pf capacitor. Find frequency of oscillations, amplifier gain margin in dB.
7.11 MHz, 13.97 dB
7.3 MHz, 14.1 dB
6.93 MHz, 12.9 dB
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⇒ In n type MOSFET, the substrate
is p type
is n type
is metallic
may be p or n type
⇒ Which of the following can be used as a buffer amplifier?
CE
CC
CB
Both (a) and (c)
⇒ When analysing two port networks in cascade, it is more convenient to use
z parameters
h parameters
T parameters
y parameters
⇒ Which of the following characteristics is not true for TTL Logic?
Good speed
Low power dissipation per gate
High cost
None of these
⇒ In a specimen of cast iron, a field strength of 400 AT/m cause a flux density of 0.6 T. In a specimen of silicon steel, the same value of H would cause B to be
0.6 T
more than 0.6 T
less than 0.6 T
0.6 T or less than 0.6 T
⇒ Monostable multivibrator is called one-shot or single-shot circuit because it
can be used once
can be used single and not with other circuits.
always returns by itself to its single stable state
changes to quasistable for a fixed period of time upon receipt of triggering signal.