20.

21,

22,

23,

24,

25,

26,

27.

28,

Malampuzha Dam situated in the district of :
(ಯ) Palakkad (B) Wrynad (८) Edukki (D) Pathanamthitta

The small current developed in a P-N junction diode when it is in reverse bias is called :
(A) Reverse current (8 Forward current
(0) Reverse saturation current (D) Active current

Which among the following factor doesn’t change the diode current ?
(A) Temperature (B) External voltage to the diode
(ಲ) Boltzman’s constant (D) Resistance

If the peak current is [, and the load resistance is Ry, the DC power output of bridge
fullwave rectifier is equal to :

(മ) 21% ൫ கற்ற © ‏ھا‎ യു 12% 72

The cut-in point of a capacitor filter is :

(ക) The instant at which the conduction starts

(8) The instant at which the conduction stops

(C) The time after which the output is not filtered

(D) The time during which the output is perfectly filtered

An optoisolator is :

(A) A combination of LED and varactor in the same package

(B) A combination of a varactor and photodiode in the same package

(C) A combination of LED and a photodiode in the same package

(D) A combination of photodiode and a Shottky-Barrier diode in the same package

The magnitude of thermal voltage is given by :
(^ 4 © 9 ‏ا کا‎ (0) Tk/q

The form factor is the ratio of :
(5) Peak value to r.m.s. value (B) உணட value to average value
(C) Average value to r.m.s. value (D) None of the above

If the number of turns, area and current of an ac circuit is doubled, the new inductance will
be:

(ಯ) Equal to the former (B) Twice of the former
(C) Four times the former (D) Half of the former
5 03/2019

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