Code: A-05
Subject: BASIC ELECTRONICS
Time: 3 Hours
Max. Marks: 100
NOTE: There are 11 Questions in all.  
  • Question 1 is compulsory and carries 16 marks. Answer to Q. 1. must be written in the space provided for it in the answer book supplied and nowhere else.
  • Answer any THREE Questions each from Part I and Part II. Each of these questions carries 14 marks.
  • Any required data not explicitly given, may be suitably assumed and stated.
Q.1
Choose the correct or best alternative in the following : (2x8)
a.
The power conversion efficiency of an output stage is defined as________.
  
(A) (B)  
(C) (D)  
   
b.
Highly stable resonance characteristics is the property of a ______ oscillator.
  
(A) Hartley (B) Colpitt  
(C) Crystal (D) Wienbridge  
   
c.
 The gate that assumes the 1 state, if and only if, the input does not take on the 1 state is called  
(A) AND gate. (B) NOT gate.  
(C) NOR gate. (D) OR gate.  
   
d.
 The width of the depleted region of a PN junction is of the order of a few tenths of a  
(A) millimetre. (B) micrometer.  
(C) meter. (D) nanometer.  
   
e.
For NOR circuit SR flip-flop, the 'not allowed' condition is ______.  
(A) S = 0, R = 0 (B) S = 0, R = 1  
  (C) S = 1, R = 1 (D) S = 1, R = 0  
   
f.
In negative feedback, the return ratio is  
(A) 0. (B) 1.  
(C) greater than 0. (D) less than 0.  
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