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 'LABORATORY TECHNICAL ASSISTANT MRRTV VHSE' And exam conducted in the year 2014. And Question paper code was '218/2014'. 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.
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The SCR can be switched off by
ಕ|) பஸ current drop out
(8) Applying torward break over voltage
(09 Applying valley voltage
(D) Applying negative trigger at its gate
The open by pass capacitor in a CE amplifier causes
(ക) Increase in voltage gain {B) Decrease in voltage gain
(0) Introduces positive feedback (D) Gain remains unchanged
Three resistors each with a value of 0,069 M ohm are connected in parallel. The total
resistance is
(^) 23 ohm (B) 230K ohm
(C) 0.23 M ohm (D) 23K ohm
The power factor is defined as
(A) Peak power times 0.707
(8) Cosine of the phase angle between true power and apparent power
(C) Ratio of true power to apparent power
(D) Sine of the phase angle difference between voltage and current
The reciprocal of reactance is
{A) Reluctance (8) Susceptance
(0) Admittance (D) Impedance
In oscillators the Barkhausen criterion for oscillation is given by the condition
(ಸ) AB=1 (8) ಸಿಗಿ 0
(^) 81ھ (D) Ap<1
Fold back current limiting has the following advantage over simple current limiting :
(ക) Simple construction
(8) Less power dissipation of series transistor
(C) Short circuit current > maximum load current
(D) None of the above
218/2014 4 A
