Source: http://www.allexamreview.com/2017/06/analog-and-digital-electronics-67.html
Timestamp: 2019-04-21 12:07:17+00:00

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Here we providing analog and digital electronics mostly asked questions and answer PDF with solution.These questions have asked may times in various exam.For full questions please download full PDF,Due to lots of figures we will not able to post all questions here so some questions from PDF are following—.
(C) An active filter. (D) An instrumentation amplifier.
(A) high CMRR. (B) low CMRR.
(A) 1 to 104 . (B) 103 .
(C) 105 . (D) 106 .
(A) PSRR. (B) CMRR .
(C) transient response. (D) input offset voltage stability.
response is given by filter.
(A) Wide band pass filter.
(B) Narrow band pass filter.
(C) Wide band reject filter. (D) Narrow band reject filter.
(A) 1mW. (B) 0.5 mW.
(C) 2 nW. (D) 50 nW.
(A) 35 ns. (B) 80 ns.
(C) 400 ns. (D) 20 ns.
and access time varies by large magnitude from chip to chip.
(C) To handle large signals.
(A) 0.8 V and 2.0 V.
(C) 0.4 V and 2 V.
(A) 5 volts. (B) 10 volts.
(C) 0.1 volts. (D) 0.3 volts.
Q.28 A 32 to 1 multiplexer has the following features.
(A) 4 MHz. (B) 2 MHz.
(D) 6 MHz. (D) 1 MHz.
(A) 5 to 10 ns. (B) 10 to 100 ns.
(C) 100 to 200 ns. (D) 2 to 3 ns.
In dual slope low conversion time is not the primary concern.
(A) 0.2 V. (B) 0.4 V.
(C) 0.1 V. (D) 0.5 V.
0.5 V assuming silicon transistors.
(A) 100 mV. (B) 50 mV.
(C) 250 mV. (D) 400 mV.
Noise margin = 250 mv.
inputs does this MUX have?
(A) 30 data inputs & 5 select inputs.
(B) 32 data inputs and 4 select inputs.
(C) 32 data inputs and 5 select inputs.
32 data inputs and 5 select input as (25=32).
(A) 2.2 KHz. (B) 30 KHz.
(C) 2.14 KHz. (D) 3.2 KHz.
2.14 KHz as clock frequency gets divided by n (n = no of mod).
(A) 40 dB. (B) 200 dB.
(C) 100 dB. (D) 70 dB.
Q.37 How many comparators would a 12-bit flash ADC require?
(A) 6 ns. (B) 5 ns.
(C) 2 ns. (D) 8 ns.
(A) 2 select input lines. (B) 3 select input lines.
(C) 8 select input lines. (D) 4 select input lines.
As 1*16 Demux requires 4 (24 = 16) select lines to select one among the 16 outputs.
(A) Zero sec. (B) 20 sec.
(C) 30 ns. (D) 32 ms.
30ns storage time is reduced due to metal-semiconductor junction.
(A) a two quadrant multiplier. (B) a one quadrant multiplier.
(C) a four quadrant multiplier. (D) a three quadrant multiplier.
(A) 100 V/mv. (B) 500 V/mv.
(C) 1000 V/mv. (D) 200 V/mv.
(A) 32.5 nA & 27.5 nA. (B) 22.5 nA & 30.2 nA.
(C) 10 nA & 16 nA. (D) 2.5 nA & 3.02 nA.
(A) 3.6 KHz. (B) 8.7 KHz.
(C) 8.2 Hz. (D) 6.63 KHz.
(A) 3.2 ms. (B) 4.1 ms.
(C) 8 ms. (D) 7.1 ms.
(A) 10 ns. (B) 5 ns.
(C) 1 ns. (D) 3.2 ns.
5 ns – fastest logic family.
n bit shift register connected as ring counter can count total N-states.
1 to 8 Demux require 3 (8=23) select lines to select one output among 8.
as ripple counter with four FF’s will count 16 states from zero to fifteen.
(A) 0.5 V. (B) 0.5 μV .
(C) 0.35 V. (D) 0.35 mV.
as the cut in voltage becomes half due to metal – sc function.
Q.60 The amplifiers in the sample and hold circuit are used to provide voltage amplification.
Sample and hold circuit does not have amplifiers.
As the magnitude response starts from unity in chebyshev odd order filters.
True as switching speed of BJT is high.
Instrumentation Amplifier amplifies the difference of the I/P signal.
Magnitude response of even order Chebyshev filter does not start from unity.
it will switch from very high resistance to low resistance.
DEMUX & Decoder are same circuits with decoder has an enable input.
Sir which is more important subject wise chapter wise pdf or the pdf in above which you mentioned like Analog most important 67question. Because it is too lengthy while studying all for Vizag steel.
I am preparing for Technical Assistant Electronics in ISRO, on Diploma ECE Qualification. So please provide Multiple choice bits on Diploma level. because all of your material on B.tech level.
For electronics part you can follow BEL expected MCQ PDF which is available on ECE PDF page.
Which would be the best thing to follow for the last minute preparations of ntpc dt 2nd stage examination . For C&I branch !

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