The pressure of air in case of pneumatic tools is generally in the range
A.4 to 6 kg/cm2
B.14 to 16 kg/cm2
C.24 to 26 kg/cm2
D.34 to 36 kg/cm2
Category: Materials Handling Mcqs
Which one of the following shovel excavators is considered most efficient in loading carriers?
A.Dipper shovel
B.Drag line
C.Back hoe
D.Clam shell
The horse power required to move a belt conveyor increases as
A.conveyor speed
B.load increases
C.angle of inclination increases
D.all of the above
The power requirement in case of a screw conveyor depends on
A.material to be handled
B.rate of transportation
C.length of conveyor
D.all of the above
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
Which braking system is not used in case of earth moving machinery?
A.Pneumatic braking system
B.Hydraulic braking system
C.Vacuum braking system
D.Mechanical braking system
The pressure of steam in a steam locomotive system is
A.10 to 15 kg/cm2
B.20 to 30 kg/cm2
C.70 to 90 kg/cm2
D.115 to 125 kg/cm2
Kink’ in a steel wire rope is produced
A.when some strands are broken
B.when the rope looses its springing action
C.when a rope with a loop or twist in its length is pulled tight
D.when the rope is permanently elongated due to overloading
In Kando system for electric locomotion
A.dc supply is used to run series motors
B.single phase supply is converted into three phase system
C.three phase ac is converted into dc
D.single phase ac is converted into dc
Which of the following material has the lowest weight/volume ratio?
A.Wheat
B.Oats
C.Lignite
D.Charcoal
