# Three different weights fall from a certain height under vacuum. They will take

1.  same time to reach earth

2.  times proportional to weight to reach earth

3.  times inversely proportional to weight to reach earth

4.   unpredictable

4

same time to reach earth

Explanation :
No Explanation available for this question

# In cross or regular lay ropes

1.  direction of twist of wires in strands is opposite to the direction of twist of strands

2.  direction of twist of wires and strands are same

3.  wires in two adjacent strands are twisted in opposite direction

4.   wires are not twisted

4

direction of twist of wires in strands is opposite to the direction of twist of strands

Explanation :
No Explanation available for this question

# In composite or reverse laid ropes

1.  direction of twist of wires in strands is opposite to the direction of twist of strands

2.  direction of twist of wires and strands are same

3.  wires in two adjacent strands are twisted in opposite direction

4.   wires are not twisted

4

wires in two adjacent strands are twisted in opposite direction

Explanation :
No Explanation available for this question

# Whether any core is required in wire ropes:

1.  yes

2.  no

3.  sometimes

4.  rarely

4

yes

Explanation :
No Explanation available for this question

# If shearing stress in nut is half the tensile stress in a bolt, then nut length should be equal to

1.  diameter of bolt

2.  0.75 x diameter of bolt

3.  1.25 x diameter of bolt

4.   1.5 x diameter of bolt

4

diameter of bolt

Explanation :
No Explanation available for this question

# Basic shaft is one

1.  whose upper deviation is zero

2.  whose lower deviation is zero

3.  whose lower as well as upper deviations are zero

4.  does not exist

4

whose upper deviation is zero

Explanation :
No Explanation available for this question

# Basic hole is one

1.  whose upper deviation is zero

2.  whose lower deviation is zero

3.  whose lower as well as upper deviations are zero

4.  does not exist

4

whose lower deviation is zero

Explanation :
No Explanation available for this question

# I.S. specifies following total number of grades of tolerances

1.  18

2.  16

3.  20

4.  22

4

18

Explanation :
No Explanation available for this question

# For standard coarse threads of nut, the threads will be as strong in failure by shear as the bolt in tension, if the height of nut (h) is approximately

1.  0.4 times

2.  0.6 times

3.  0.7 times

4.  0.8 times

4

0.4 times

Explanation :
No Explanation available for this question

# Allen bolts are

1.  self-locking bolts

3.  used in aircraft application

4.  provided with hexagonal depression in head

4