Two shafts ‘A’ and ‘B’ under pure torsion are of identical length and identical weight and are made of the same material. The shaft ‘A’ is solid and the shaft ‘B’ is hollow. We can say that

Machine Design
Two shafts ‘A’ and ‘B’ under pure torsion are of identical length and identical weight and are made of the same material. The shaft ‘A’ is solid and the shaft ‘B’ is hollow. We can say that

Both the shafts are equally good

Shaft A is better than shaft B

None of these

Shaft B is better than shaft A

Both the shafts are equally good

Shaft A is better than shaft B

None of these

Shaft B is better than shaft A

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
Tapered roller bearings can take

Both radial and axial loads and the ratio of these being greater than unity

Axial load only

Both radial and axial loads and the ratio of these being less than unity

Radial load only

Both radial and axial loads and the ratio of these being greater than unity

Axial load only

Both radial and axial loads and the ratio of these being less than unity

Radial load only

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
Stress concentration factor is defined as the ratio of

Nominal stress to the endurance limit

Maximum stress to the endurance limit

Maximum stress to the nominal stress

Nominal stress to the maximum stress

Nominal stress to the endurance limit

Maximum stress to the endurance limit

Maximum stress to the nominal stress

Nominal stress to the maximum stress

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
An elastic bar is fixed at the upper end and loaded at the lower end by a falling weight. The shock load produced can be reduced by

Decreasing the modulus of elasticity of the bar

Decreasing the cross-sectional area of the bar

All of these

Increasing the length of bar

Decreasing the modulus of elasticity of the bar

Decreasing the cross-sectional area of the bar

All of these

Increasing the length of bar

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
When an open coiled helical compression spring is subjected to an axial compressive load, the maximum shear stress induced in the wire is (where D = Mean diameter of the spring coil, d = Diameter of the spring wire, K = Wahl's stress factor, and W = Axial compressive load on the spring)

(8WD/ πd3) × K

(2WD/ πd3) × K

(WD/ πd3) × K

(4WD/ πd3) × K

(8WD/ πd3) × K

(2WD/ πd3) × K

(WD/ πd3) × K

(4WD/ πd3) × K

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
Castle nut is a locking device in which

A hard fibre or nylon cotter is recessed in the nut and becomes threaded as the nut is screwed on the bolt causing a tight grip

One smaller nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming

Through slots are made at top and a cotter pin is passed through these and a hole in the bolt, and cotter pin spitted and bent in reverse direction at other end

A slot is cut partly is middle of nut and then slot reduced by tightening a screw

A hard fibre or nylon cotter is recessed in the nut and becomes threaded as the nut is screwed on the bolt causing a tight grip

One smaller nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming

Through slots are made at top and a cotter pin is passed through these and a hole in the bolt, and cotter pin spitted and bent in reverse direction at other end

A slot is cut partly is middle of nut and then slot reduced by tightening a screw

ANSWER DOWNLOAD EXAMIANS APP

Machine Design

Machine Design Two shafts ‘A’ and ‘B’ under pure torsion are of identical length and identical weight and are made of the same material. The shaft ‘A’ is solid and the shaft ‘B’ is hollow. We can say that

Machine Design Tapered roller bearings can take

Machine Design Stress concentration factor is defined as the ratio of

Machine Design An elastic bar is fixed at the upper end and loaded at the lower end by a falling weight. The shock load produced can be reduced by

Machine Design Castle nut is a locking device in which

Machine Design
Two shafts ‘A’ and ‘B’ under pure torsion are of identical length and identical weight and are made of the same material. The shaft ‘A’ is solid and the shaft ‘B’ is hollow. We can say that

Machine Design
Tapered roller bearings can take

Machine Design
Stress concentration factor is defined as the ratio of

Machine Design
An elastic bar is fixed at the upper end and loaded at the lower end by a falling weight. The shock load produced can be reduced by

Machine Design
Castle nut is a locking device in which