Thermal efficiency of a standard Otto cycle for a compression ratio 5.5, will be
A.20%
B.35.40%
C.47.50%
D.50%
E.100%
Category: Mechanical Engineering Mcqs
Rails for railway track are made of
A.cast iron
B.mild steel
C.chrome steel
D.high speed steel
The sand used for sprinkling on the patterns/parting surface of the mould is known as
A.Floor sand
B.Parting sand
C.Dry-sand
Th phenomenon of emf development between two diferent metals placed in contact is known as
A.Seeback effect
B.Thomson effect
C.Peltier effect
D.Kelvin effect
E.Thermocouple effect
Starting motor current may be around
A.0.1 A
B.0.5 A
C.1. A
D.25 A
E.35 A
Basically D’ Arsonwal movement is
A.voltage sensitive
B.current sensitive
C.power sensitive
D.None of the above
When the dynamic viscosity of a fluid is 0.6 poise and specific gravity is 0.6, the kinematic viscosity of that fluid will be
A.0.36 poise
B.0.6 poise
C.1 poise
D.None of the above
In compression, a prism of brittle material will break
A.Into large number of pieces
B.By forming a bulge
C.By shearing slong oblique plane
D.In a direction along the direction of load
E.None of the above
Popeller type windmill runs at speeds of
A.60 to 80 rpm
B.100 to 120 rpm
C.180 to 200 rpm
D.300 to 400 rpm
Green sand moulds are
A.Green in colour
B.Painted with green paint
C.Made out of green coloured sand
D.Made from damp moulding sand
E.Skin dried moulds
