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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Cascade control means :
(A) feed forward control ٠٠ (8) more than one feed-back loop
(C) on-off control (D) one feed-back loop
On-off control, which is a special case of proportional control, has a band width of about
percent.
(५) 100 © 75
(0 ॐ (0) 0
Solenoid valves are operated by :
(ಗಿ) Pneumatic signal (B) Hydraulic signal
)0( 71600/1081 8181381 1 (D) None of these
A control valve shows the flow is directly proportional to the valve opening for a constant
pressure drop 18 : <
(ಗಿ) 11008೯ وم (18) Quick opening valve
(0 Equal percentage valve (D) None of the above
The scan time of PLC depends on :
(5) Scan rate
18) Length of the program
(C) Types of functions used in'the program
(D) All the above
The input device used for PLC is :
(^) Push buttons (B) . Alarms
(9) Relays (D) All the above
The quick opening valve that consist of a metal circular disk with its pivot axes at right
angles to the direction of flow in the pipe is called :
(4) Butterfly valve (8) Ball valve
{C) Globe valve (D) Solenoid valve
When transistors are used in digital circuits they usually operate in the :
(4) active region - ('B)hreakdownregion
(८) saturation and cutoff regions (D) linear region
9 178/2014
[P.T.O.]
