Mechanical Engineering · all questions

Theory Of Machine
practice.

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543

Questions

20/28

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Q381

Open question

If the controlling force line for a spring controlled governor when produced intersects the Y-axis at the origin, then the governor is said to be

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Q382

Open question

When the speed of the engine fluctuates continuously above and below the mean speed, the governor is said to be

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Q383

Open question

A single degree of freedom system is given by,

m \times \frac{d ^{2} x}{d t ^{2}} + c \times \frac{d x}{d t} + s x = F cos ω t

with usual notations. It represents

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Q384

Open question

A mechanism _________ for transmitting or transforming motion.

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Q385

Open question

The motion between a pair which takes place in __________ is known as incompletely constrained motion.

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Q386

Open question

When the body is suspended at the point of suspension, its periodic time and frequency will be ________ as compared to the body suspended at the point of percussion.

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Q387

Open question

Length of arc of contact is given by

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Q388

Open question

To transmit power from one rotating shaft to another whose axes are neither parallel nor intersecting, use?

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Q389

Open question

In a band and block brake, the ratio of tensions on tight side and slack side of the band is (where

μ

= Coefficient of friction between the blocks and the drum,

θ

= Semi-angle of each block subtending at the center of drum and n = Number of blocks)

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Q390

Open question

The natural frequency of free transverse vibrations due to a point load acting over a simply supported shaft is equal to (where

δ

= Static deflection of a simply supported shaft due to the point load)

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Q391

Open question

In a screw jack, the effort required to lower the load W is given by

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Q392

Open question

The factional torque for square thread at the mean radius r while raising load W is given by

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Q393

Open question

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

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Q394

Open question

The inversion of a mechanism is

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Q395

Open question

Which type of gearing is used in steering system of an automobile?

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Q396

Open question

A fixed gear having 200 teeth is in mesh with another gear having 50 teeth. The two gears are connected by an arm. The number of turns made by the smaller gear for one revolution of arm about the centre of bigger gear is

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Q397

Open question

The Grubler's criterion for determining the degrees of freedom (n) of a mechanism having plane motion is (where