# For S.H.M. cam, the acceleration of the follower at the ends of the stroke and aimed stroke respectively, is

1.  maximum and zero

2.  zero and maximum

3.  minimum and maximum

4.  zero and minimum

4

maximum and zero

Explanation :
No Explanation available for this question

# Throw of a cam is the maximum distance of the follower from

1.  base circle

2.  pitch circle

3.  root circle

4.  prime circle

4

base circle

Explanation :
No Explanation available for this question

# To obviate axial thrust, following gear drive is used

1.  double helical gears having opposite teeth

2.  double helical gears having identical teeth

3.  single helical gear in which one of the teeth of helix angle a is more

4.   mutter gears

4

double helical gears having opposite teeth

Explanation :
No Explanation available for this question

# Which of the following is false statement in respect of differences between machine and structure

1.  Machines transmit mechanical work, whereas structures transmit forces

2.  In machines, relative motion exists be-tween its members, whereas same does not exist in case of structures

3.  Machines modify movement and work, whereas structures modify forces

4.  Efficiency of machines as well as structures is below 100%

4

Efficiency of machines as well as structures is below 100\%

Explanation :
No Explanation available for this question

# If D1 and D2 be the diameters of driver and driven pulleys, then belt speed is proportional to

1.  D1/D2

2.  D2/D1

3.  D1-D2

4.  D1

4

D1

Explanation :
No Explanation available for this question

# Typewriter constitutes

1.  machine

2.  structure

3.  mechanism

4.  inversion

4

mechanism

Explanation :
No Explanation available for this question

# Lower pairs are those which have

1.  point or line contact between the two elements when in motion

2.  surface contact between the two elements when in motion

3.  elements of pairs not -held together mechanically

4.  two elements that permit relative motion

4

surface contact between the two elements when in motion

Explanation :
No Explanation available for this question

# A point on a link connecting double slider crank chain traces a

1.  straight line

2.  circle

3.  parabola

4.  ellipse

4

ellipse

Explanation :
No Explanation available for this question

# A pantograph is a mechanism with

1.  lower pairs

2.  higher pairs

3.  rolling pairs

4.  turning pairs

4

lower pairs

Explanation :
No Explanation available for this question

# Kinematic pairs are those which have

1.  point or line contact between the two elements when in motion

2.  surface contact between the two elements when in motion

3.  elements of pairs not held together mechanically

4.  two elements that permit relative motion

4