Question37:-If the gain of a non-inverting averaging amplifier is one. Determine the input voltages, if the output voltage is
3۷

“V_(1)* =6v, ` ४ (2) = ३५ 210 ` ४ (3) =2५
\/ (1) = 9\, ` \/ (2) = ५५210 ` / (3) = -4\
\/ (1) =8५, ` ५ (2) = -6५ 270 ` \/ (3) = ‏۷ھ‎
‎1) = 7५, ` ४ (2) = 4५ 271 `\/ (3) = -3५
Correct Answer:- Option-D
Question38:-In differential op-amp configuration a subtractor is called as
A:-Scaling amplifier
B:-All of the mentioned
C:-Summing amplifier
D:-Difference amplifier
Correct Answer:- Option-A
Question39:-An ideal operational amplifier has
A:-Infinite output impedance
B:-Zero input impedance
C:-Infinite bandwidth
D:-All of the above
Correct Answer:- Option-C
Question40:-How the op-amp comparator should be choosen to get higher speed of operation ?
A:-Wider bandwidth
B:-High slew rate
C:-Large gain
D:-None of the above
Correct Answer:- Option-A
Question41:-The gain of the first order low pass filter
A:-Increases at the rate 20dB/decade
B:-Increases at the rate 40 dB/decade
C:-Decreases at the rate 20dB/decade
D:-Decreases at the rate 40dB/decade
Correct Answer:- Option-C
Question42:-The poles of the transfer function of normalized low pass butter worth filter exists
A:-On unit circle
B:-Outside unit circle
C:-Inside unit circle
D:-None of the mentioned
Correct Answer:- Option-A
Question43:-A stable multivibrator operating at 150 Hz has a discharge time of 2.5 ms. The duty cycle of the circuit is
A:-50%
B:-75%
C:-95.99%
D:-37.5%
Correct Answer:- Option-D
Question44:-Calculate the output frequency in a frequency multiplier if, fin = 200 Hz is applied to a7 divide by N-network.
൧:-1.2 kHz
B:-1.6 kHz
C:-1.4 kHz
D:-1.9 kHz
Correct Answer:- Option-C
Question45:-Convert binary 111111110010 to hexadecimal
A: E E2_(16)°
8:- 62 (16)
௦228 (16)
0:- 02. (16)
Correct Answer:- Option-B
Question46:-Which gate is best used as a basic comparator ?
A:-NOR
B:-OR
C:-AND

A
B
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