For traction applications, the type of motor best suited is
A.Induction motor
B.Synchronous motor
C.DC shunt motor
D.DC series motor
E.DC compound motor
Category: Machine Design Mcqs
If the allowable shear stress is 960 kg/sq. cm for the size h cm, the allowable force per cm of weld length would be
A.950 h
B.670 h
C.475 h
D.400 h
E.315 h
Shear stress theory is applicable to
A.Ductile materials
B.Brittle materials
C.Plastic materials
D.Elastic materials
E.Visco-elastic materials
The function of a washer is
A.To fill the axial gas
B.To provide cushioning effect
C.To absorb shocks and vibrations
D.To provide bearing area
E.None of the above
Hydraulic testing of boilers is done at pressures
A.Below and above atmosphere
B.Slightly above atmospheric pressure
C.At half the working pressure of boiler
D.At working pressure of boiler
E.At 1
The loss of strength in compression which occurs when there is a gain in strength in the tension due to overloading is
A.Iso-strain
B.Relaxation
C.Hysteresis
D.Bounhinger effect
E.Hooke’s effect
As per Indian Boilers regulations the type of joint preferred for longitudinal joint is
A.Welded joint
B.Welded joint with cover plate
C.Riveted lap joint
D.Reveted butt joint
E.Any of above
In a bolt the plane of shear
A.Should be across threaded portion of the shank
B.Should never be acress threaded portion of the shank
C.Should be parallel to the axis of bolt
D.Should be normal so the threaded portion of the shank
E.None of the above
The satisfactory method of reclaiming worn out and under sized part subject to fatigue loads is
A.Repainting
B.Polishing
C.Electroplating
D.Recasting
E.None of the above
In case of a cotter joint the compressive load is transmitted from one rod to another rod
A.Directly
B.Via cotter
C.Via cotter pin
D.Via collar
E.None of the above
