A long helical spring having a spring stiffness of 12 kN/m and number of turns 20, breaks into two parts with number of turns 10 each in both the parts. If the two parts are connected in series, then the softness of the resultant spring will be

Machine Design
A long helical spring having a spring stiffness of 12 kN/m and number of turns 20, breaks into two parts with number of turns 10 each in both the parts. If the two parts are connected in series, then the softness of the resultant spring will be

6 kN/m

12 kN/m

24 kN/m

30 kN/m

6 kN/m

12 kN/m

24 kN/m

30 kN/m

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Machine Design
When two non-intersecting and non-coplanar shafts are connected by gears, the arrangement is known as

Spiral gearing

Spur gearing

Helical gearing

Bevel gearing

Spiral gearing

Spur gearing

Helical gearing

Bevel gearing

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Machine Design
A fast and loose pulley drive is used when

Driven shaft is to be started or stopped whenever desired without interfering with the driving shaft

Shafts are arranged at right angles and rotate in one definite direction

Shafts are arranged parallel and rotate in the opposite directions

Shafts are arranged parallel and rotate in the same directions

Driven shaft is to be started or stopped whenever desired without interfering with the driving shaft

Shafts are arranged at right angles and rotate in one definite direction

Shafts are arranged parallel and rotate in the opposite directions

Shafts are arranged parallel and rotate in the same directions

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Machine Design
For a shoe brake, the equivalent coefficient of friction is equal to (where μ = Actual coefficient of friction, and θ = Semi-block angle)

2μ sinθ/(θ + sinθ)

μ sinθ/(2θ + sin 2θ)

4μ sinθ/(2θ + sin 2θ)

4μ sinθ/(θ + sinθ)

2μ sinθ/(θ + sinθ)

μ sinθ/(2θ + sin 2θ)

4μ sinθ/(2θ + sin 2θ)

4μ sinθ/(θ + sinθ)

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Machine Design
When the bearing is subjected to large fluctuations of load and heavy impacts, the bearing characteristic number should be _________ the bearing modulus.

5 times

15 times

10 times

20 times

5 times

15 times

10 times

20 times

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Machine Design
The process which improves the machinability of steels, but lowers the hardness and tensile strength is

Full annealing

Normalising

Process annealing

Spheroidising

Full annealing

Normalising

Process annealing

Spheroidising

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Machine Design

Machine Design A long helical spring having a spring stiffness of 12 kN/m and number of turns 20, breaks into two parts with number of turns 10 each in both the parts. If the two parts are connected in series, then the softness of the resultant spring will be

Machine Design When two non-intersecting and non-coplanar shafts are connected by gears, the arrangement is known as

Machine Design A fast and loose pulley drive is used when

Machine Design For a shoe brake, the equivalent coefficient of friction is equal to (where μ = Actual coefficient of friction, and θ = Semi-block angle)

Machine Design When the bearing is subjected to large fluctuations of load and heavy impacts, the bearing characteristic number should be _________ the bearing modulus.

Machine Design The process which improves the machinability of steels, but lowers the hardness and tensile strength is

Machine Design
A long helical spring having a spring stiffness of 12 kN/m and number of turns 20, breaks into two parts with number of turns 10 each in both the parts. If the two parts are connected in series, then the softness of the resultant spring will be

Machine Design
When two non-intersecting and non-coplanar shafts are connected by gears, the arrangement is known as

Machine Design
A fast and loose pulley drive is used when

Machine Design
For a shoe brake, the equivalent coefficient of friction is equal to (where μ = Actual coefficient of friction, and θ = Semi-block angle)

Machine Design
When the bearing is subjected to large fluctuations of load and heavy impacts, the bearing characteristic number should be _________ the bearing modulus.

Machine Design
The process which improves the machinability of steels, but lowers the hardness and tensile strength is