THEORY OF MACHINE QUIZ

The values of velocity and acceleration of piston at near dead center for a slider-crank mechanism will be

0, 0

0, and less than coV

0, and more than co2r

cor, 0

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YOUR ANSWER : ?

If the pressure angle is __________, a reciprocating follower will jam in its bearings.

Too small

Small

Large

Too large

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Which of the following is a pendulum type governor?

Hartnell governor

Porter governor

Watt governor

None of these

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The danger of breakage and vibration is maximum

Near the critical speed

Below the critical speed

Above the critical speed

None of these

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Which of the following is an inversion of Single slider crank chain?

Rotary engine

Beam engine

Oldham’s coupling

Elliptical trammel

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Cylindrical cams can be classified as

Circular

Reciprocating

Tangent

None of these

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Which of the following is an open pair?

Ball and socket joint

Journal bearing

Cam and follower

Lead screw and nut

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Which of the following is an example of a higher pair?

Toothed gearing

All of the listed here

Belt and rope drive

Ball and roller bearing

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The equation of motion for a vibrating system with viscous damping is (d²x/dt²) + (c/m).(dx/dt) + (s/m).x = 0, if the roots of the equation are __________ then the system will be under damped.

Real

Equal

Complex conjugate

None of these

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Cross head and guides form a

Lower pair

Higher pair

Sliding pair

Turning pair

TRUE ANSWER : ?
YOUR ANSWER : ?

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