Kerala PSC Previous Years Question Paper & Answer
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Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'TRADESMAN ELECTRONICS AND PRODUCTION TECHNOLOGY TECHNICAL EDUCATION EKM DIST' And exam conducted in the year 2014. And Question paper code was '190/2014'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.
88. An ideal voltage source of 15 Volt provides a current of 150 mA to a load. If the load
impedance is doubled the new load current becomes :
(4)
©)
60 mA (B} 75 mA
150 mA (D) 300 mA
89. The barrier potential for Silicon is :
(५)
(0)
0.3 ष्णाः (18) (0.7 volt
0.5 volt (2) 0.2 volt
60. The reverse diode current for silicon is a few :
(५)
(0)
Milli Ampere (B) Micro Ampere
Nano ampere (D) Nene of above
61. Which diode 1s used as voltage regulator?
۵)
(0)
Zener diode (18) Ordinary PN junction diode
Schottky diode (1) Photo dinde
62. Avalanche breakdown in semiconductor diode vccurs when :
ക്ര
(0)
(0)
(D)
Forward current exceeds certain value
Reverse bias exceeds a certain value
Forward bias exceeds a certain value
The potential barrier is reduced to zero
68. Ina PNP transistor with normal bias :
(५)
(0)
(೧)
D)
Only holes eross the collector junction
Only majority carriers cross the eollector junction
The collector junction has low resistance
The E-B junction is forward biased and C-B junction is reverse biased
64. For transistor action :
(4)
(0)
(0)
00)
190/2014
Collector must be heavily doped than emitter
The collector base junction must be forward biased
Base region must be narrow
Base region must be of N type
10 A
