Electronics - Study Mode
[#51] The Boolean expression $$Bleft( {A + B}
ight) + Aleft( {overline B + A}
ight)$$ xa0 xa0 can be realized using minimum number of
Correct Answer
(C) 1 OR gate
[#52] An amplifier of gain 1000 is made into a feedback amplifier by feeding 9.9% of its output voltage in series with the input opposing. If f L = 20 Hz and f H = 200 kHz for the amplifier without feedback, then due to the feedback
Correct Answer
(C) the f H increases by 100 times
[#53] The following circuit (where, R L ≫ R) performs the operation of
Correct Answer
(A) OR gate for a negative logic system
[#54] In the circuit shown, the ports Q 1 and Q 2 are in the states Q 1 = 1, Q 2 = 0. The circuit is now subjected to two complete clock pulses. The state of these ports now becomes
Correct Answer
(C) Q 2 = 1, Q 1 = 1
[#55] For the circuit shown below, the potential difference (in volt) across R L is
Correct Answer
(B) 52