If a refrigerator compressor cuts out on starter overloads the probable reason could be
A.Low line voltage
B.Suction pressure high
C.Discharge pressure high
D.Compressor tight
E.Any of the above
Category: Mechanical Engineering Mcqs
Which spark plug will have lower heat rating
A.W 95 T1
B.W 145 T1
C.W 225 T1
D.W 300 T1
E.W 350 T1
In case ac motors are used on E.O.T. the type of motor used is
A.synchronous motor
B.wound roto-induction motor
C.squirrel case induction motor
D.Any of the above
A particle inside a hollow sphere of internal radius r with coefficient of friction 1/?3 can rest upto height of
A.0.125 r
B.0.134 r
C.0.18 r
D.0.25 r
E.0.435 r
The mass moment of inertia is
A.The resistance to angular acceleration
B.The mass of every element of a body multiplied by its distance from the axis
C.Any of the above
D.None of the above
Which type of pump is different from others?
A.Centrifugal pump
B.Lobe pump
C.Gear pump
D.Sliding vane pump
E.Fuel pump for diesel engine
Creep in belts is due to
A.Elasticity of belt material
B.Plasticity of belt material
C.Elongation of belt due to tension
D.Differential elougation of belt due to difference in tension on two sides of a pulley
E.Plastic deformation of belt material due to constant use
Porosity of a welded joint may be caused by
A.Poor base metal
B.Low welding current
C.High welding current
D.Wrong size of electrode
E.None of the above
The size of a steam engine is 200 x 250 – 300 r.p.m. In this 200 indicates
A.Horse power
B.Shaft diameter
C.Steam pressure in 1bs/sq. in.
D.Cylinder bore
E.Piston stroke
In Buttress dam the column or slenderness ratio is usually maintained between
A.2 to 5
B.5 to 7
C.7 to 10
D.12 to 15
E.20 to 25
