Related Questions
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4
The power of a Porter governor is equal to
A. [c²/(1 + 2c)] (m + M) g.h
B. [2c²/(1 + 2c)] (m + M) g.h
C. [3c²/(1 + 2c)] (m + M) g.h
D. [4c²/(1 + 2c)] (m + M) g.h
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4
To transmit power from one rotating shaft to another whose axes are neither parallel nor intersecting, use?
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4
The frictional torque transmitted in a flat pivot bearing with assumption of uniform pressure is _________ as compared to uniform wear.
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4
Which of the following is a higher pair?
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4
A rotor supported at A and B carries two masses as shown in the below figure. The rotor is
C. Statically and dynamically balanced
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4
Which of the following would constitute a link?
A. Piston, piston rod and cross head
C. Piston rod and cross head
D. Piston, crank pin and crank shaft
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4
Ball and a Socket forms a
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4
The acceleration of a particle moving with simple harmonic motion, at any instant is given by
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4
The moment on the pulley which produces rotation is called
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4
For fluctuating loads, well suited bearing is
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4
Which of the following is a spring controlled governor?
C. Wilson-Hartnell governor
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4
The main disadvantage of the sliding pair is that it is
C. Difficult to manufacture
D. Both (A) and (B) above
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4
The velocity of the rubbing surface __________ with the distance from the axis of the bearing.
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4
The critical speed of a shaft with a disc supported in between is equal to the natural frequency of the system in
C. Longitudinal vibrations
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The two links OA and OB are connected by a pin joint at O. If the link OA turns with angular velocity ω₁ rad/s in the clockwise direction and the link OB turns with angular velocity ω₂ rad/s in the clockwise direction, then the rubbing velocity at the pin joint O is (where r = Radius of the pin at O)
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4
Which of the following disciplines provides study of inertia forces arising from the combined effect of the mass and the motion of the parts?
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The component of the acceleration, parallel to the velocity of the particle, at the given instant is called
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4
In a vibrating system, if the actual damping coefficient is 40 N/m/s and critical damping coefficient is 420 N/m/s, then logarithmic decrement is equal to
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4
In automobiles the power is transmitted from gear box to differential through
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4
Which one of the following is an exact straight line mechanism using lower pairs?
D. Peaucelliers mechanism
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4
In a coupling rod of a locomotive, each of the four pairs is a ________ pair.
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4
In Meyer's expansion valve, the main valve is driven by an eccentric having an angle of advance from
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4
When the nature of contact between the elements of a pair is such that it can only slide relative to the other, the pair is known as a
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4
Under logarithmic decrement, the amplitude of successive vibrations are
B. In arithmetic progression
C. In geometric progression
D. In logarithmic progression
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4
The pitching of a ship produces forces on the bearings which act __________ to the motion of the ship.
A. Vertically and parallel
B. Vertically and perpendicular
C. Horizontally and parallel
D. Horizontally and perpendicular
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4
The relation between number of pairs (p) forming a kinematic chain and the number of links (l) is
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4
A circular bar moving in a round hole is an example of
A. Incompletely constrained motion
B. Partially constrained motion
C. Completely constrained motion
D. Successfully constrained motion
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4
Which of the following mechanism is an approximate straight line motion mechanism?
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4
For high speed engines, the cam follower should move with
B. Simple harmonic motion
C. Uniform acceleration and retardation
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A torsional system with discs of moment of inertia I₁ and I₂ as shown in the below figure, is gear driven such that the ratio of speed of shaft B to shaft A is 'G'. Neglecting the inertia of gears, the equivalent inertia of disc on shaft B at the speed of shaft A is equal to