freezing coil
cooling coil
chilling coil
all of these
✅ The correct answer is option D.
Engineering MCQs
The ratio of the thickness of thermal boundary layer to the thickness of hydrodynamic boundary layer is equal to (Prandtl number)n, where n is equal to
-0.33333333333333
-0.66666666666667
1
-1
✅ The correct answer is option A.
If the cutting speed is increased, then the built-up-edge
becomes longer
may or may not form
becomes smaller and finally does not form at all
has nothing to do with
✅ The correct answer is option C.
In forced vibrations, the magnitude of damping force at resonance is equal to the impressed force.
Correct
Incorrect
✅ The correct answer is option A.
When a body is subjected to three mutually perpendicular stresses, of equal intensity, the ratio of direct stress to the corresponding volumetric strain is known as
Young’s modulus
modulus of rigidity
bulk modulus
Poisson’s ratio
✅ The correct answer is option C.
The steel widely used for motor car crankshafts is
nickel steel
chrome steel
nickel-chrome steel
silicon steel
✅ The correct answer is option B.
The maximum flame temperature occurs
at the outer cone
at the inner cone
between the outer and inner cone
at the torch tip
✅ The correct answer is option B.
In electric resistance welding, voltage required for heating is
1 to 5 volts
6 to 10 volts
11 to 20 volts
50 to 100 volts
✅ The correct answer is option B.
The maximum and minimum value of the tractive force is given by
± c.m x ω2.r
± 2 x c.m.ω2.r
± 2(1 – c)m x ω2.r
± 2 x c.m x ω2.r
✅ The correct answer is option C.