An adlabatic wall permits
A.Conduction heat flow only
B.Convective heat flow only
C.Radiation heat flow only
D.Heat exchange by all the three modes of heat transfer
E.No heat exchange
Category: Mechanical Engineering Mcqs
Internal energy of a perfect gas depends on
A.Temperature, specific heats and pressure
B.Temperature, specific heats and enthalpy
C.Temperature, specific heats and entropy
D.Temperature and specific heats
E.Temperature only
Piston compression rings are made of
A.Cast iron
B.Steel
C.Aluminium
D.Bronze
E.White metal
The stress in the dam should be within the specified limits for the body of dam in the foundations. If the stress at the toe and heel are excessive, they can be brought within permissible limits by
A.Grouting
B.Providing anchor blocks
C.Providing friction blocks
D.Providing filters
E.Any of the above
Alum is
A.hygroscopic
B.abrasive
C.none of the above
Casting made in relatively simple shapes and designed for subsequent fabrication by rolling, forging etc. are known as
A.rolls
B.chills
C.ingots
D.pigs
Weld spatter is
A.A flux
B.A filler material used in gas welding
C.A filler material used in soldering
D.An electrode used in inert atmosphere
E.A welding defect
Manning’s formula is used to determine
A.Friction hed loss in pipes running full
B.Friction head loss in pipes running partially full
C.Friction head loss in open channels
D.Friction head loss in irregular sections
E.Discharge through weirs and notches
A synchro is
A.A variable reluctance transducer
B.A parabolic transducer
C.An angular position transducer
D.A synchronizing transducer
E.Any of the above
Which of the following numbers has three significant figures
A.0.0024
B.0.00243
C.0.0243
D.2.4301
