Kerala PSC Previous Years Question Paper & Answer
Page:5
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Pump Operator ' And exam conducted in the year 2023. And Question paper code was '023/2023/OL'. Medium of question paper was in Malayalam or English . Booklet Alphacode was ''. 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.
Question37:-Which of the following statement is correct about hydraulic brake system ?
i. Pascal's law is applied in hydraulic brake system
ii. Boyle's law is applied in hydraulic brake system
iii. liquid pressure is transmitted equally in all directions
A:-Only i and iii
-Only ii and iii
C:-Only i and ii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-A
Question38:-Which of the following statement is correct ?
i, Actuator converts mechanical energy into hydraulic energy
ii. Actuator converts hydraulic energy into mechanical energy
iii, Actuator converts hydraulic power into linear force or motion
A:-Only i and ii
B:-Only ii and iii
C:-Only i and iii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-B
Question39:-Unit of viscosity is
i. kgf-sec/’m*(2)"
ii. dyne-sec/*cm*(2)°
॥॥. #5/ 71^ (2)
A:-Only i and iii
B:-Only ii and iii
C:-Only i and ii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-D
Question40:-Which of the following statement is correct about a 3/2 DC valve ?
i. Three ports and two switching positions
ii. Three switching positions and two ports
iii. 3/2 DC valve can be used to control single acting hydraulic cylinders
A:-Only i and iii
:-Only ii and iii
C:-Only i and ii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-A
Question41:-In single acting hydraulic cylinder, the piston and rod assembly moves in the opposite direction by
i. a spring force
ii. gravity
iii. external force
A:-Only i and ii
-Only ii and iii
C:-Only i and iii
D:-All of the above (i, ii and iii)
Correct Answer:- Option-D
Question42:-Which of the following statement is correct about pneumatic system ?
i, Compressor converts mechanical energy into pneumatic energy
ii. Brake chamber converts pneumatic energy into mechanical energy
iii, Compressor converts hydraulic energy into mechanical energy
A:-Only i and ii
B:-Only ii and iii
-None of these
D:-All of the above (i, ii and iii)
Correct Answer:- Option-A
Question43:-Which of the following statement is correct about Boyle's law ?
i, Boyle's law is the relation between pressure and volume of a gas
1.൮൦ ഡയ = `0 (2) ` ` \/ (2) 1, > constant
ili, Boyle's law is the relation between compression and expansion of gases
A:-Only i and ii
B:-Only ii and iii
C:-None of these
D:-All of the above (i, ii and iii)