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Theory-of-machines Questions Set 30:

Quiz Mode

The ratio of pitch diameter to the number of teeth is called the

backlash

addendum

dedendum

module

Solution:

Calculate the power transmitted in the shaft at 150 rpm. The torque is 9000 N⋅m.

140 kW

150 kW

160 kW

175 kW

Solution:

The method of obtaining different mechanisms by fixing in turn different links in a kinematic chain is known as

Structure

Machine

Inversion

Compound mechanism

Solution:

In a Meyer's expansion valve, the expansion valve is driven by an eccentric. What is the angle of advance from the eccentric?

60° - 70°

80° - 90°

50° - 60°

0 degrees

Solution:

Match the following types of followers in Column-I with their characteristics in Column-II:

A-1, B-3, C-2, D-4

A-2, B-3, C-4, D-1

A-3, B-4, C-2, D-1

A-3, B-1, C-2, D-4

Solution:

The ratio of maximum fluctuation of speed to the mean speed is called the

fluctuation of energy

coefficient of fluctuation of speed

maximum fluctuation of energy

none of the mentioned

Solution:

What is the inertia of the flywheel if the engine speed varies from 200 rad/s to 150 rad/s, and the change in kinetic energy during the cycle is 600 Nm?

0.10 kg-m²

0.08 kg-m²

0.02 kg-m²

0.04 kg-m²

Solution:

The diameter of the hub of a flywheel is usually taken as:

equal to the diameter of the shaft

three times the diameter of the shaft

twice the diameter of the shaft

four times the diameter of the shaft

Solution:

Which of the following conditions should be satisfied for complete balancing of multi-cylinder inline engines?

Primary couples should be balanced

Secondary couples should be balanced

None of the above

Both primary and secondary couples should be balanced

Solution:

In a simple gear train, if the number of idle gears is odd, what will be the motion of the driven gear?

depend upon the number of teeth on the driving gear

none of the mentioned

be the same as that of the driving gear

be opposite to that of the driving gear

Theory-of-machines Questions Set 30:

The ratio of pitch diameter to the number of teeth is called the

Solution:

Calculate the power transmitted in the shaft at 150 rpm. The torque is 9000 N⋅m.

Solution:

The method of obtaining different mechanisms by fixing in turn different links in a kinematic chain is known as

Solution:

In a Meyer's expansion valve, the expansion valve is driven by an eccentric. What is the angle of advance from the eccentric?

Solution:

Match the following types of followers in Column-I with their characteristics in Column-II:

Solution:

The ratio of maximum fluctuation of speed to the mean speed is called the

Solution:

What is the inertia of the flywheel if the engine speed varies from 200 rad/s to 150 rad/s, and the change in kinetic energy during the cycle is 600 Nm?

Solution:

The diameter of the hub of a flywheel is usually taken as:

Solution:

Which of the following conditions should be satisfied for complete balancing of multi-cylinder inline engines?

Solution:

In a simple gear train, if the number of idle gears is odd, what will be the motion of the driven gear?

Solution:

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