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Theory of Machine

Theory of Machine
A rotary internal combustion engine has __________ cylinders.

Four
Five
Six
Seven

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Theory of Machine
In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line of stroke PO and rotates with uniform angular velocity at ω rad/s. The Klien's acceleration diagram for determining the acceleration of the piston P is shown by quadrilateral CQNO. The acceleration of the piston P with respect to the crank-pin C is given by

ω² × NO
ω² × CN
ω² × QN
ω² × CO

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Theory of Machine
The Ackermann steering mechanism is preferred to the Davis type in automobiles because

The former is most economical
The former is most rigid
The former is mathematically accurate
The former is having turning pair

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Theory of Machine
In higher pair, the relative motion is

Combination of sliding and turning
Purely rotary
Purely sliding
Purely turning

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Theory of Machine
In vibration isolation system, if ω/ωn < 2, then for all values of damping factor, the transmissibility will be (where ω = Angular speed of the system, ωn = Natural frequency of vibration of the system)

Greater than unity
Zero
Equal to unity
Less than unity

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Theory of Machine
In automobiles the power is transmitted from gear box to differential through

Universal joint
Bevel gear
Knuckle joint
Hooke's joint

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