The secondary unbalanced force due to inertia of reciprocating parts in a reciprocating engine is given by (where m = Mass of reciprocating parts, ω = Angular speed of crank, r = Radius of crank, θ = Angle of inclination of crank with the line of stroke, and n = Ratio of the length of connecting rod to radius of crank)

Theory of Machine
The secondary unbalanced force due to inertia of reciprocating parts in a reciprocating engine is given by (where m = Mass of reciprocating parts, ω = Angular speed of crank, r = Radius of crank, θ = Angle of inclination of crank with the line of stroke, and n = Ratio of the length of connecting rod to radius of crank)

m.ω².r sinθ

m.ω².r cosθ

m.ω².r (cos 2θ/n)

m.ω².r (sin 2θ/n)

m.ω².r sinθ

m.ω².r cosθ

m.ω².r (cos 2θ/n)

m.ω².r (sin 2θ/n)

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Theory of Machine
In involute gears, the pressure angle is

Dependent on the size of gears

Dependent on the size of teeth

Always constant

Always variable

Dependent on the size of gears

Dependent on the size of teeth

Always constant

Always variable

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Theory of Machine
The frictional torque transmitted by a disc or plate clutch is same as that of

Truncated conical pivot bearing

Conical pivot bearing

Flat pivot bearing

Flat collar bearing

Truncated conical pivot bearing

Conical pivot bearing

Flat pivot bearing

Flat collar bearing

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Theory of Machine
Which of the following is false statement in respect of differences between machine and structure?

Efficiency of machines as well as structures is below 100 %

Machines transmit mechanical work, whereas structures transmit forces

In machines, relative motion exists between its members, whereas same does not exist in case of structures

Machines modify movement and work, whereas structures modify forces

Efficiency of machines as well as structures is below 100 %

Machines transmit mechanical work, whereas structures transmit forces

In machines, relative motion exists between its members, whereas same does not exist in case of structures

Machines modify movement and work, whereas structures modify forces

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Theory of Machine
The length of a simple pendulum which gives the same frequency as the compound pendulum, is

(kG² + l₁²)/ l₁

kG² + l₁

(kG + l₁²)/ l₁

kG + l₁

(kG² + l₁²)/ l₁

kG² + l₁

(kG + l₁²)/ l₁

kG + l₁

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Theory of Machine
The radius of a friction circle for a shaft rotating inside a bearing is (where r = Radius of shaft, and tan φ = Coefficient of friction between the shaft and bearing)

r tanφ

r sinφ

r cosφ

(r/2) cosφ

r tanφ

r sinφ

r cosφ

(r/2) cosφ

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Theory of Machine

Theory of Machine In involute gears, the pressure angle is

Theory of Machine The frictional torque transmitted by a disc or plate clutch is same as that of

Theory of Machine Which of the following is false statement in respect of differences between machine and structure?

Theory of Machine The length of a simple pendulum which gives the same frequency as the compound pendulum, is

Theory of Machine The radius of a friction circle for a shaft rotating inside a bearing is (where r = Radius of shaft, and tan φ = Coefficient of friction between the shaft and bearing)

Theory of Machine
In involute gears, the pressure angle is

Theory of Machine
The frictional torque transmitted by a disc or plate clutch is same as that of

Theory of Machine
Which of the following is false statement in respect of differences between machine and structure?

Theory of Machine
The length of a simple pendulum which gives the same frequency as the compound pendulum, is

Theory of Machine
The radius of a friction circle for a shaft rotating inside a bearing is (where r = Radius of shaft, and tan φ = Coefficient of friction between the shaft and bearing)