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 INSTRUMENTATION TECHNICAL EDUCATION KNR' And exam conducted in the year 2014. And Question paper code was '178/2014'. 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 output waveform of a 555 timer is : . त
(A) Sinusoidal (B) Triangular
(C) Rectangular (D) Elliptical
When Q decreases in a Colpits oscillator ; the frequency of oscillation :
(A) Increase’ 3 (8) Decrease
(0 Remains the same (D) Becomes erratic
The property of an ideal Op amp are :
(5) It should have zero input impedance
(छ) It should have an infinite output impedance
)© Tt should have a zero open loop gain
(D) None of the above
An aquadag is used in a CRO to collect :
(A) Primary electrons
(3) Secondary emission electrons
)© Both primary and secondary emission 18ء
(D) None of the above
The Diacisa:
(ക) Transistor (3) Unidirectional device
)© Three layer device ٠ (D) Bidirectional device
The NAND gate output will be low if the two inputs are :
(5) 00 ೫) 01
© 10 12): 1೬
A half adder ലാഡ്! has two inputs and :
ക One output (B) Two output
(C) ‘Three output 3 (D) None of these
The speed of conversion is maximum in :
(A) Successive-approximation A/D converter
(B) Parallel-comparative A/D converter
(C) Counter ramp A/D 00
(D) Dual-slope A/D converter
178/2014 4
