Quick return mechanism is an inversion of

1.  Four bar chain

2.  Single slider crank chain

3.  Double slider crank chain

4.  Crossed slider crank chain

4

Single slider crank chain

Explanation :
No Explanation available for this question

In full depth 14 ½ 0 degree involutes system, the smallest number of teeth in a pinion which meshes with rack without interference is

1.  12

2.  16

3.  25

4.  32

4

32

Explanation :
No Explanation available for this question

Inversion of mechanism is

1.  Changing of a higher pair to lower pair

2.  Obtained by fixing different links in a kinematic chain

3.  Turning it upside down

4.  Obtained by reversing the input and output motion

4

Obtained by fixing different links in a kinematic chain

Explanation :
No Explanation available for this question

The sense of Coriolis component 2 Vw is the same as that of the relative velocity vector V rotated

1.  450 in the direction of rotation of the link containing the path

2.  450 in the direction opposite to the rotation of the link containing the path

3.  900 in the direction of rotation of the link containing the path

4.  1800 in the direction opposite to the rotation of the link containing the path

4

900 in the direction of rotation of the link containing the path

Explanation :
No Explanation available for this question

Match the following 14 ½ 0 deg. Complete system of gears List-I List-II (A) Duodenum 1. 2/pd (B) Clearance 2. 0.157/pd (C) Working depth 3. 1.157/pd (D) Addendum 4. 1/pd

1.  1          2          3          4

2.  4          3          2          1

3.  3          2          1          4

4.  3          1          2          4

4

3          2          1          4

Explanation :
No Explanation available for this question

A certain machine requires a torque of (500 + 50 sin θ) kN-m to derive it, where θ is the angle of rotation of shaft measured from certain datum. The machine is directly coupled to an engine which produces a torques (500 + 50 sin 2θ) kN-m in a cycle. How many times the value of torque of machine and engine will be identical

1.  1

2.  2

3.  4

4.  8

4

4

Explanation :
No Explanation available for this question

In reciprocating engines primary forces

1.  Are completely balanced

2.  Are partially balanced

3.  Are balanced by secondary forces

4.   Cannot be balanced

4

Are partially balanced

Explanation :
No Explanation available for this question

Which of the following statements is correct 1. If a rotor is statically balanced it is always dynamically balanced also 2. If a rotor is dynamically balanced, it may not be statically balanced 3. If a rotor is dynamically balanced, it is always statically balanced 4. If a rotor is statically balanced, it may or may not be dynamically balanced

1.  1 and 2 only

2.  3 and 4 only

3.  2 and 3 only

4.  1 and 4 only

4

3 and 4 only

Explanation :
No Explanation available for this question

Which of the following are inversions of a double slider crank chain 1. Whitworth return motion 2. Scotch Yoke 3. Oldham’s coupling 4. Rotary engine Select the correct answer using the codes given below

1.  1 and 2

2.  1, 3 and 4

3.  2 and 3

4.   2, 3 and 4

4

2 and 3

Explanation :
No Explanation available for this question

Consider the following statements: Coriolis component of acceleration depends on 1. Velocity of slider 2. Angular velocity of the link 3. Acceleration of slider 4. Angular acceleration of link Of these statements

1.  1 and 2 are correct

2.  1 and 3 are correct

3.  2 and 4 are correct

4.  1 and 4 are correct

4