1
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
In a shunt-shunt negative feedback Amplifier, as compared to the basic Amplifier,
A
both input and output impedance decreases .
B
input impedance decreases but output impedance increases.
C
input impedance increases but output impedance decreases
D
both input and output impedance decreases
2
GATE ECE 1998
Subjective
+5
-0
Implement a monostable multivibrator using the timer circuit shown, in Fig. Also determine an expression for ON time T of the o/p pulse. GATE ECE 1998 Analog Circuits - 555 Timer Question 3 English
3
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
The image channel selectivity of super heterodyne receiver depends upon
A
IF amplifiers only
B
RF and IF amplifiers only
C
Preselector, RF and IF amplifiers
D
Pre selector, and RF amplifiers only
4
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
A DSB-SC signal is generated using the carrier $$\cos\left(\omega_ct\;+\;\theta\right)$$ and modulating singal x(t). The envelope of the DSB-SC signal is
A
x(t)
B
$$\left|x\left(t\right)\right|$$
C
only positive portion of x(t)
D
$$x\left(t\right)\cos\left(\theta\right)$$
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