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53.

54.

55.

56.

A rotating disc of 1 m diameter has two eccentric masses of 0.5 kg each at radii of
50 mm and 60 mm at angular positions of 0° and 150°, respectively. A balancing
mass of 0.1 kg is to be used to balance the rotor. What is the radial position of the
balancing mass ?

A) 50 mm B) 120 mm
C) 150 mm D) 280 mm

The mechanism used in a shaping machine is

A) Aclosed 4-bar chain having 4 revolute pairs

B) A closed 6-bar chain having 6 revolute pairs

C) Aclosed 4-bar chain having 2 revolute and 2 sliding pairs
)

D) An inversion of the single slider-crank chain

A vibrating machine is isolated from the floor using springs. If the ratio of excitation
frequency of vibration of machine to the natural frequency of the isolation system is
equal to 0.5, then transmissibility ratio of isolation is

1 3

^ 5 7

05 0) 2
) 3 )

Consider the following statements regarding state of stress at a point :

1. Number of components required to define the state of stress at a point are
nine.

2. Number of components required to define the state of stress at a point are
twelve.

3. Number of components required to define the state of stress at a point in
equilibrium condition are six.

4. Number of components required to define the state of stress at a point in
equilibrium condition are sixteen.
Which of the following statements is/are correct ?
A) 1 and 3 only B) 1 and 4 only
C) 2and3 only D) 2 and 4 only
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