Correct Answer:- Option-A
Question18:-\int® *(2x*(4))(1+x*(10) dx is
(2)/(5)` ` 0०^ (-1)` (>^ (5) )+८
(2)/(5)` ` 511^ (-1)` (+^ (5)` )+८
(2)॥5)' ॥917(-1) (५१ (5) )+८
0:- (2)07) ॥०५(1+ ५»? (10) )+८
Correct Answer:- Option-C
Question19:-The area included between one arch of the curve y=sin x and the x-axis is
4:--2
8:-2
C:-0
D:--1
Correct Answer:- Option-B
Question20:-The solution of “dy/dx* +°(2x)/(1+x*%(2))* y="(1)/(1+x%(2))* 15

Avy=x*(2) +1+¢
B:-y="(c)/(x*(2)+1)°
C:-y="tan*(-1)° x+¢
D:-y=" (x+c)/(1+x%(2))°
Correct Answer:- Option-D
Question21:- amplifier is commonly used as a frequency multiplier.
A:-Class A
B:-Class B
C:-Class C

D:-All of the above
Correct Answer:- Option-C
Question22:-Removing bypass capacitor across the emitter-leg resistor in a CE amplifier causes
A:-Increase in current gain
B:-Decrease in current gain
C:-Increase in voltage gain
D:-Decrease in voltage gain
Correct Answer:- Option-D
Question23:-If the maximum collector current due to signal alone is 3mA, then zero signal collector current should be at
least equal to
A:-6mA
B:-2mA
C:-3mA
D:-1mA
Correct Answer:- Option-C
Question24:-In a multistage amplifier, the overall frequency response is determined by the
A:-Frequency response of each stage depending on the relationships of the critical frequencies
B:-Frequency response of the first amplifier
C:-Frequency response of the last amplifier
D:-Lower critical frequency of the first amplifier and the upper critical frequency of the final amplifier
Correct Answer:- Option-A
Question25:-Halving the power corresponds to a dB
A:-10, decrease
B:-3, decrease
C:-3, increase
D:-10, increase
Correct Answer:- Option-B
Question26:-If negative feedback is introduced in amplifiers with shunt current configuration, the input resistance will
A:-Increase
B:-Remains the same
C:-Increase, decrease or remains the same depending on input
D:-Decrease
Correct Answer:- Option-D
Question27:-Pinch-off voltage’ V_(p)° for an FET is the drain voltage at which
A:-Significant drain current starts flowing