45.

46.

47,

48.

49.

90.

51.

82.

53.

One coulomb-per second is equal to one :
(A) Watt (B) Joule
(@ भण (D) Ampere

The reverse - saturation current of a silicon diode :
(ക 200108 for every 10°C increase in temperature
(2). Does not change with temperature
(C) Halves for every 1°C decrease in temperature
0) Increases by 1.5 times for every 2°C increment in temperature.

In class — A amplifier, the output current flows for :
(A) A part of the eycle or the input signal y
(7) The full cyele of the input signal
(9 Half the cycle of the input signal
(D) 8/4th of the cycle of the input signal

For silicon the forbidden gap is :
‏ھ)‎ 1.1 ev (8) 0.2ಗ ೧೪
(9 0.50% D) 0.70%

The modulation used in cellular communication is =

(4) Amplitude modulation (03) Pulse code modulation

(C) ~ Digital modulation (D) Narrow band frequency modulation
Manganin is an alloy of : ∙

(A) Copper, manganese and nickel (18 Copper and manganese

(£) Manganese and nickel (D) Manganese, aluminium and nickel

In Quadrature Amplitude Modulation, (QAM), the carrier is modulated by :
(A) - Amplitude (B) Phase
(C) Frequency (D) Both (A) and (B)

What are the steps followed to achieve Pulse Code Modulation?
(A) Sampling, quantizing, modulation (3) Detecting, sampling, quantizing

(C) Sampling, quantizing, coding (D) Coding, modulating, packetizing
An ideal power supply is characterized by :
வி Very large output resistance (B) Very small output resistance

(0 Zero internal resistance (D) Infinite internal resistance

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