Question4i::Which of the following is a nat a surface finishing process?
AcHoning
छण
एनपा
Ds-Lapping
Correct Answer: Option-C
Question42:-The process of increasing the cross-section of a bar at the expense of its length, is called

A-Drawing down

B:-Spinning
(¬
D:-Peening

Correct Answer:- Option-C
Question43:-The mechanical efficiency of an impulse turbine is
‘Acratio of the actual power produced by the turbine to the energy actually supplied by the turbine
B:-ratio ofthe actual work available at the turbine to the energy imparted to the whee!
C=ratio of the work done on the wheel to the energy of the jet
D-None of the above
Correct Answer:- Option ®
Questions4:-The process of beveling sharp ends of a workpiece is called as
1111
B:-Grooving
‏وہءھی‎
‎DChamfering
‎Correct Answer:- Option-D
Question4s:-What is meant by drag in casting process?
‘Ac Upper Part of casting Flask
B:-Molten Metal
CeLower part of casting flask
D=-upper and lower part of casting flask
Correct Answer:- Option-C
Question46:-A cycle consisting of one constant pressure, one constant volume and two isentropic processes is known as
AcDiesel cycle
B:-Sterling cycle
C-Otto cycle
D-Carnat cycle
Correct Answer:- Option-é
Question47:-The amount of heat required to raise the temperature of the unit mass of gas through one degree at constant volume, is called
‘Ac Specific heat at constant volume
B:-Specific heat at constant presuure
೦-೪0೦ Joule
D-None of these
Correct Answer:- Option-é
Questiond®:-An adiabatic process is one in which
‘Acno heat enters or laves the gas
B:-the temperature of the gas changes
=the change in internal energy is equal to the mechanical workdone
Deal of the above
Correct Answer:- Option-D
Question49:-The compression ratio for petrol engine is

५-3९०6