Jacks are portable, hand-operated devices for moving
A.heavy
B.light
C.heavy
D.light
Category: Materials Handling Mcqs
A jack having 2 cm as the diameter of the screw at the root of the thread, may be expected to safely lift a load of about
A.5 to 7 tonnes
B.25 to 30 tonnes
C.35 to 40 tonnes
D.40 to 50 tonnes
In which wire rope application, the highest factor of safety is necessary?
A.Tow ropes
B.Slings
C.Drag lines
D.Struck guys
In case of belt conveyors, while conveying anthracite, the maximum permissible slope is
A.16?
B.20?
C.30?
D.28?
The sinuous path taken by an engine as against the alignment of the track is known as
A.Rolling motion
B.Nosing motion
C.Lurching motion
D.Hunting motion
The horse power to weight ratio of a steam engine is generally of the order of
A.10 – 15 kg/HP
B.20 – 30 kg/HP
C.30 – 50 kg/HP
D.60 – 80 kg/HP
Skip hoists used on blast furnaces are generally
A.manually driven
B.steam engine driven
C.electric motor driven
D.air motor driven
Average weight/volume ration for ash is around
A.300 kg/m3
B.600 kg/m3
C.900 kg/m3
D.1200 kg/m3
Electric overhead travelling cranes operate on
A.dc only
B.ac only
C.either ac or dc
Dozers are used for handling material by
A.dragging
B.pulling
C.pushing
D.Any of the above
