4

Pitch diameter

Inside diameter

Outside diameter

Height

D. Height

4

Effective

Smallest

Largest

None of these

4

d

1.25 d

1.5 d

1.75 d

4

Partially

Fully

Either A or B

None of these

4

# In composite or reverse laid ropes

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

Direction of twist of wires and strands are same

Wires in two adjacent strands are twisted in opposite direction

Wires are not twisted

4

Compression

Tension

Shear

4

# Basic shaft is one

Whose upper deviation is zero

Whose lower deviation is zero

Whose lower as well as upper deviations are zero

Does not exist

4

Increases

Decreases

Remain same

None of these

4

Dedendum circle

Pitch circle

Clearance circle

4

# For a square key made of mild steel, the shear and crushing strength are related as

Shear strength is equal to crushing strength

Shear strength is greater than crushing strength

Shear strength is less than crushing strength

None of the above

4

# When the screw in a mechanical screw jack rotates, the load kept on the top of it moves

Axially upwards

Axially downwards

Axially upwards or downwards

None of these

4

# When the connected members are very yielding (soft gasket) as compared to the bolt, then the resultant load on the bolt will be equal to the

Initial tension

Sum of the initial tension and external load applied

Initial tension or external load, whichever is greater

4

# The velocity factor for ordinary cut gears operating at velocities upto 12.5 m/s is equal to

0.75/ (0.75 + √v)

3/ (3 + v)

4.5/ (4.5 + v)

6/ (6 + v)

4

T₁ - T₂ + Tc

T₁ + T₂ + Tc

(T₁ - T₂ + Tc)/2

(T₁ + T₂ + Tc)/2

4

One-fourth

One-third

One-half

Double

4

# Allen bolts are

Self locking bolts

Used in aircraft application

Provided with hexagonal depression in head

4

# The contact ratio is the ratio of

Length of arc of recess to the circular pitch

Length of path of contact to the circular pitch

Length of arc of contact to the circular pitch

Length of arc of approach to the circular pitch

4

Low efficiency

High efficiency

Strong teeth

4

# In V-belt drive, belt touches

At bottom

At sides only

Both at bottom and sides

Could touch anywhere

4

# The connecting rod bolts are tightened up with initial tension greater than the external load so that

Joint may not open up

Bolts are weakest elements

The resultant load on the bolt would not be affected by the external cyclic load

Bolts will not loosen during service

4

Bolts

Keys

Cotters

Rivets

4

# A sliding bearing which operates without any lubricant present, is called

Zero film bearing

Boundary lubricated bearing

Hydrodynamic lubricated bearing

Hydrostatic lubricated bearing

4

Minor diameter

Major diameter

Pitch diameter

None of these

4

Elasticity

Endurance

Strength

Toughness

4

0.33

0.4

0.5

0.55

4

# The application of third type levers is found in

Handle of a hand pump

Hand wheel of a punching press

Lever of a loaded safety valve

A pair of tongs

4

Higher

Lower

Same

None of these

4

# The bending stress in a curved beam is

Zero at the centroidal axis

Zero at the point other than centroidal axis

Maximum at the neutral axis

None of these

4

60°

55°

47°

29°

4

Low

High

Medium

None of these