Kerala PSC Previous Years Question Paper & Answer
Page:14
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'A/C MECHANIC KTDC' And exam conducted in the year 2017. And Question paper code was '132/2017'. 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.
93.
94,
95.
96.
97.
98.
99.
The best refrigerant is one for which .
ക ODP=1 (B) ODP=05
(© ODP=0.75 യ ODP=0
Relative COP =
(ಹ) Actual COP/ Theoretical COP (B) Theoretical COP / Actual COP
(೮) Actual COP x Theoretical COP )©( None of these
The refrigerant after condensation process is cooled below the saturation temperature before
throttling. Such a process is called
(^) Sub-cooling 8) Super-cooling
(C) Normal cooling (D) None of these
On P-H diagram, the isentropic compression process is represented by an
(A) Inclined line (B) Vertical line
(C) Horizontal line (D) Curved line
The super-heating in a refrigeration cycle
(ಹ) Does not alter COP (B) Increase COP
)0 Decrease COP (D) None of these
How many numbers of orbits in the orbiting scroll of scroll compression process ?
(ಯ) Three (B) ஈஸ
(೧) Two (D) One
Most air cooled condensers are designed to operate with a temperature difference of
ھ) 6°C (9) 9°C
(© 140 യ) 2490
100. The centrifugal compressor are generally used for refrigerants that require
(^) small displacements and low condensing pressure.
(8) large displacements and high condensing pressure.
(C) small displacements and high condensing pressure.
(D) large displacements and low condensing pressure.
132/2017 14 A
