# ABCD is a four – bar mechanism in which AB = 30 cm, and CD = 45 cm. AB and CD are both perpendicular to fixed link AD, as shown in the figure. If velocity of B at this condition is V, then velocity of C is

1.  V

2.  3V/2

3.  9V/4

4.  2V/3

4

3V/2

Explanation :
No Explanation available for this question

# Match List-I wish List-II and select the correct answer using the codes given below the lists List-I List-II (A) Quadric cycle chain 1. Elliptic trammel (B) Single cycle crank chain 2. Rap sons slide (C) Double slider crank chain 3. Ackerman steering (D) Crossed slider crank chain 4. Eccentric mechanism 5. Pendulum pump (B) Single cycle crank chain(C) Double slider crank chain

1.  5          4          2          1

2.  3          1          5          1

3.  5          3          4          2

4.  3          5          1          2

4

3          5          1          2

Explanation :
No Explanation available for this question

# A friction circle is a circle drawn when the journal rotates in a bearing. Its radius depends on the coefficient of friction and

1.  Magnitude of the forces on the journal

2.  Angular velocity of the journal

3.  Clearance between the journal and the bearing

4

Explanation :
No Explanation available for this question

# The following data refers to an open belt drive: Pullay A Pullay B Purpose Driving Driven Diameter 450 mm 750 mm Angle of contact qA = 150 qB = 210 Coefficient of friction between belt and pulley fA = 0.36, fB = 0.22 The ratio of tensions may be calculated using the relation T1/T2 = exp (z), where z is

1.  fA θA

2.  fB θB

3.  (fA + fB) (θA + θB)/4

4.  (fA θA + fB θB)/2

4

fA θA

Explanation :
No Explanation available for this question

# In a multiple V belt drive, when a single belt is damaged, it is preferable to change the complete set to

1.  Reduce vibration

2.  Reduce slip

4.  Ensure proper alignment

4

Ensure proper alignment

Explanation :
No Explanation available for this question

# A thin circular disc is rolling with a uniform linear speed, along a straight path surface. Consider the following statements in this regard: 1. All points of the disc has zero acceleration 2. The centre of the disc has zero acceleration 3. The centre of the disc has centrifugal acceleration 4. The point on the disc making contact with the plane surface has zero acceleration Of these statements:

1.  1 and 4 are correct

2.  3 and 4 are correct

3.  3 alone is correct

4.   2 alone is correct

4

2 alone is correct

Explanation :
No Explanation available for this question

# An elliptic trammel is shown in the given figure associated with the motion of the mechanism are fixed and moving cent rods. It can be established analytically or graphically that the moving cent rode is a circle with radius and centre respectively of

1.  1 and 0

2.  1/2 and B

3.  1/2 and C

4.  1/2 and D

4

1 and 0

Explanation :
No Explanation available for this question

# The Klein’s method of construction for reciprocating engine mechanism

1.  Is a simplified version of instantaneous centre method

2.  Utilises a quadrilateral similar to the diagram of mechanism for reciprocating engine

3.  Enables determination of Corioli’s component

4.  Is based on the acceleration diagram

4

Utilises a quadrilateral similar to the diagram of mechanism for reciprocating engine

Explanation :
No Explanation available for this question

# With reference to the mechanism shown in the figure, the relation between F and P is

1.  F = 0.5 P. Tan α

2.  F = P. Tan α

3.  P = 2F. Tan α

4.  F = 2P. Tan α

4

F = 0.5 P. Tan α

Explanation :
No Explanation available for this question

1.  10 cm

2.  20 cm

3.  30 cm

4.  50 cm

4