Kerala PSC Previous Years Question Paper & Answer
Page:6
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Assistant Manager (Mechanical)-Travancore Titanium Products Ltd' And exam conducted in the year 2021. And Question paper code was '079/2021'. 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.
079/21
25.
26.
27.
28.
29.
30.
31.
32.
Water hammer in pipes takes place when
A) Fluid flows with very high velocity
B) Fluid flows with very high pressure
C) Flowing fluid is suddenly brought to rest by closing a valve
D) Flowing fluid is gradually brought to rest by closing a valve
Which one is not a rotating machine ?
A) Gear pump B) Centrifugal pump
C) Jet pump D) Vane pump
Why a Net Positive Suction Head (NPSH) is required for a hydraulic pump ?
A) To increase suction head B) To increase efficiency
C) To increase discharge D) To prevent cavitation
The maximum hydraulic efficiency of an ideal impulse turbine with blade angle A is
A) (1+c0osA)/2 8) (1-cosA)/2
©) (1+8inA)/2 0) )1- 2
The overall efficiency of a Pelton turbine is 70%. What is the hydraulic efficiency if
the mechanical efficiency is 80% ?
A) 82.5% B) 87.5%
C) 85.5% D) 86.5%
Measurement of temperature is based on
A) Zeroth law of thermodynamics B) First law of thermodynamics
C) Second law of thermodynamics D) Third law of thermodynamics
Heat and work are
A) Intensive properties B) Extensive properties
C) Point functions D) Path functions
The ratio of 7०५ for a gas with n degree of freedom is equal to
A) 2n+1 8) 2-1)
0) 1+(2/n) 0) (142/೧