26-03-2014, 03:24 PM
Electronics & Communication Electronices Sample Questions :
Q-8 A circuit has a resistance of 11 W, a coil of inductive reactance 120 W, and a
capacitor with a 120-W reactance, all connected in series with a 110-V, 60-Hz power
source. What is the potential difference across each circuit element?
A) (a) VR = 110 V, (b) VL = VC = 1.2 Kv
B) (a) VR = 120 V, (b) VL = VC = 2.4 kV
C) (a) VR = 4.8 V, (b) VL = VC = 0 kV
D) (a) VR = 5.0 V, (b) VL = VC = 8.0 V
Q-2 Applying DeMorgan's theorem to the expression , we get
A) (A+B)+C
B) A(B + C)
C) Both A & B
D) None of above
Q-4 Refer Below figure to Determine the resonant frequency...
A) 123.4 kHz
B) 61.7 kHz
C) 45.97 kHz
D) 23.1 kHz
Q-4 Express the decimal number 57 in binary.
A) 100101
B) 111010
C) 110010
D) 111001
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Q-5 A vertical electric dipole antenna
a) radiates uniformly in all directions.
b) radiates uniformly in all horizontal directions, but more strongly in the vertical
direction.
c) radiates most strongly and uniformly in the horizontal directions
d) does not radiate in the horizontal directions