Wax is applied on car body because
A.It is water repellent
B.It seals off the pores
C.The surface shines
D.Any of the above
E.None of the above
Category: Mechanical Engineering Mcqs
Skip hoists are generally used where
A.the lift is too high
B.the lumps to be lifted are large
C.the material is pulverized
D.all of the above
Taper gererally used in lathes now-a-days is
A.Brown and sharpe
B.Morse
C.Jarno
D.Parkinson
E.None of above
There is no need for the withdrawal of pattern from the mould in case of
A.wax patterns
B.hollow patterns
C.patterus with core
D.consumable patterns
During sensible of cooling of air
A.Wet bulb temperature decreases and relative humidity increases
B.Wet bulb temperatures increases and relative humidity decreases
C.Both wet bulb temperatures as well as relative humidity increase
D.Both wet bulb temperature as well as relative humidity decrease
E.Both humidity ratio as well as relative humidity remain constant
The pour point of diesel fuel oil must be
A.More than the coldest atmospheric temperature at which oil is to be pumped
B.Less than the coldest atmospheric temperature of which oil is to be pumped
C.More than 100?C
D.More than 0?C
E.Less than 0?C
In order to lower the cutting forces and also to decrease the cutting wear, alloying element generally added to steel for free machining is
A.Manganese
B.Lead
C.Chromium
D.Aluminium
E.Sulphur
Which of the following is very powerful carbide former in cast iron?
A.Silicon
B.Vanadium
C.Chromium
D.Nickel
The extinction coefficient for different qualities of glasses varies in the range of
A.5-25 m-1
B.5-25 cm-1
C.5-25 mm-1
D.5-25 km-1
During planetary motion which of the following remains constant?
A.Augular speed
B.Linear velocity
C.Angular acceleration
D.Total angular momentum
E.All of the above
