The value of permissible error depends upon
A.The scale
B.The instrument available
C.Class of work
D.All of the above
E.None of the above
Category: Mechanical Engineering Mcqs
Suppose that hot water is stored at a temperature that is 25?C higher than room temperature. Water required to store 1 million cal of heat is about
A.40 litre
B.40 kilolitre
C.25 litre
D.2500 litre
If water in closed pipe freezes, the pipe will
A.Rupture along a plane perpendicular to the axis of pipe
B.Rupture zig-zag along the length
C.Rupture along weakest circumferential section
D.Rupture in a plane inclined at 45 degree to the longitudinal axis of the pipe
E.Rupture along a line running longitudinally along the pipe
In following operations are to be performed on a job, which one would be performed first
A.Drilling
B.Boring
C.Counter sinking
D.Tapping
E.Sport facing
Freon 12 is a compound consisting of stoms of
A.Carbon, hydrogen and fluorine
B.Carbon, hydrogen and oxygen
C.Carbon, hydrogen, fluorine and chlorine
D.Carbon, fluorine and chlorine
E.Carbon and hydrogen
For acid resistance cast iron should have silicon percentage of
A.1 percent
B.2 percent
C.10 percent
D.15 percent
E.25 percent
Visco-elastic behaviour is common in
A.Crystalline materials
B.Non-crystalline solids
C.Non-crystalline organic polymers
D.Plastics
E.Rubber
Runway speed of a Pelton wheel is
A.Actual operating speed
B.No lead speed
C.Full load speed
D.No load speed when governor mechanism fails
E.90% greater than normal speed
The frictional torque transmitted by a cone clutch is the same as that of
A.flat collar bearing
B.conical pivot bearing
C.truncated conical pivot bearing
D.None of the above
According to kinetic theory of heat
A.Temperature should rise during boiling
B.Temperature should fall during freezing
C.At low temperatures all bodies are in solid state
D.At absolute zero there is absolutely no vibration of molecules
