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 'Overseer/ Draftsman (Mechanical) Gr I, Draftsman Gr II (Mechanical Engineering), Plant Engineer (Mechanical), Senior Driller, Purchase Assistant etc ' And exam conducted in the year 2023. And Question paper code was '065/2023'. 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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065/23
When two bodies taking part in heat transfer, at zero thermal potential
A) Radiation and conduction cease
B) Radiation and conduction continue
C) Radiation continues
)
D) Conduction continues
Thermal radiation involves
A) Ultra violet and Gamma rays B) Visible light and Infrared rays
C) Infrared rays and Ultrasonic rays D) Ultra violet and X rays
For a perfect black body
A) Absorptivity=0, Reflectivity=0, Transmissivity=1
B) Absorptivity=1, Reflectivity=0, Transmissivity=0
C) Absorptivity=0, Reflectivity=1, Transmissivity=0
)
D) None of these
Energy performance ratio of a heat pump is
A) Less than 1 B) Greater than 1
C) Equal to1 D) Between 0 and 1
1 ton of refrigeration is equal to
A) 3.5W 8) 3.5 kw C) 211 kJ/sec D) 50 cal/min
Ammonia refrigerants are commonly used with
A) lron and Steel B) Copper and Brass
C) Iron and Copper D) Steel and Brass
In a psychrometric chart constant specific volume lines are
A) Curved lines B) Horizontal straight lines
C) Vertical straight lines D) Inclined straight lines
Weight of water vapour present per kg of dry air is called
A) Relative humidity B) Humidity ratio
C) Degree of saturation D) Absolute humidity