Home
Current Affairs January 2024

What is the correct answer?

4

A bolt

A. Has a head on one end and a nut fitted to the other

B. Has head at one end and other end fits into a tapped hole in the other part to be joined

C. Has both the ends threaded

D. Is provided with pointed threads

Correct Answer :

A. Has a head on one end and a nut fitted to the other


Related Questions

What is the correct answer?

4

When a belt drive is transmitting maximum power,

A. Effective tension is equal to centrifugal tension

B. Effective tension is half of centrifugal tension

C. Driving tension on slack side is equal to centrifugal tension

D. Driving tension on tight side is twice the centrifugal tension

What is the correct answer?

4

When a nut is tightened by placing a washer below it, the bolt will be subjected to following type of loads

A. Compression

B. Tension

C. Shear

D. Combined loads

What is the correct answer?

4

For high speed engines, the cam follower should move with

A. Uniform velocity

B. Simple harmonic motion

C. Uniform acceleration and retardation

D. Cycloidal motion

What is the correct answer?

4

When a closely coiled helical spring is subjected to a couple about its axis, the stress induced in the wire material of the spring is

A. Bending stress only

B. A combination of torsional shear stress and bending

C. Direct shear stress only

D. A combination of bending stress and direct shear stress

What is the correct answer?

4

Brittle coating technique is used for

A. Determining brittleness

B. Protecting metal against corrosion

C. Protecting metal against wear and tear

D. Experimental stress analysis

What is the correct answer?

4

For general industrial machinery, the ratio of the length of journal to its diameter is taken as

A. 0.5 to 1

B. 1 to 2

C. 3 to 5

D. 5 to 10

What is the correct answer?

4

A shaft is subjected to fluctuating loads for which the normal torque (T) and bending moment (M) are 1000 N-m and 500 N-m respectively. If the combined shock and fatigue factor for bending is 1.5 and combined shock and fatigue factor for torsion is 2, then the equivalent twisting moment for the shaft is

A. 2000 N-m

B. 2050 N-m

C. 2100 N-m

D. 2136 N-m

What is the correct answer?

4

An open belt drive is used when

A. Shafts are arranged at right angles and rotate in one definite direction

B. Shafts are arranged parallel and rotate in the opposite directions

C. Shafts are arranged parallel and rotate in the same directions

D. Driven shaft is to be started or stopped whenever desired without interfering with the driving shaft

What is the correct answer?

4

A taper key which fits half in the key way of the hub and half in the key way of shaft, is known as

A. Angular bevel gears

B. Mitre gears

C. Crown Bevel gears

D. Internal bevel gears

What is the correct answer?

4

In case of pressure vessels having open ends, the fluid pressure induces

A. Longitudinal stress

B. Circumferential stress

C. Shear stress

D. None of these

What is the correct answer?

4

Which one of the following loading is considered for the design of axles?

A. Bending moment only

B. Twisting moment only

C. Combined bending moment and twisting moments

D. Combined action of bending moment, twisting moment and axial thrust

What is the correct answer?

4

The number of slots in a 25 mm castle nut is

A. 8

B. 6

C. 4

D. 2

What is the correct answer?

4

Resilience of a material is important, when it is subjected to

A. Combined loading

B. Fatigue

C. Thermal stresses

D. Shock loading

What is the correct answer?

4

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

A. Shear strength is equal to crushing strength

B. Shear strength is greater than crushing strength

C. Shear strength is less than crushing strength

D. None of the above

What is the correct answer?

4

In most machine members, the damping capacity of the material should be

A. Low

B. Zero

C. High

D. Could be anything

What is the correct answer?

4

The ratio of driving tensions for flat belts, neglecting centrifugal tension, is (where T₁, and T₂ = Tensions on the tight and slack sides of belt respectively, μ = Coefficient of friction, between the belt and pulley, and θ = Angle of contact)

A. T₁/T₂ = μθ

B. log (T₁/T₂) = μθ

C. T₁/T₂ =eμθ

D. T₁/T₂ = log μθ

What is the correct answer?

4

Which of the following statement is wrong?

A. The V-belt may be operated in either direction with tight side of the belt at the top or bottom

B. The V-belt drive is used with large centre distance

C. The power transmitted by V-belts is less than flat belts for the same coefficient of friction, arc of contact and allowable tension in the belts

D. The ratio of driving tensions in V-belt drive is more than flat belt drives

What is the correct answer?

4

The property of a material which enables it to resist fracture due to high impact loads is known as

A. Elasticity

B. Endurance

C. Strength

D. Toughness

What is the correct answer?

4

A tap bolt

A. Has a head on one end and a nut fitted to the other

B. Has head at one end and other end fits into a tapped hole in the other part to be joined

C. Has both the ends threaded

D. Has pointed threads

What is the correct answer?

4

When a material is subjected to fatigue loading, the ratio of the endurance limit to the ultimate tensile strength is

A. 0.20

B. 0.35

C. 0.50

D. 0.65

What is the correct answer?

4

A connecting rod should be

A. Strong in buckling about X-axis

B. Strong in buckling about Y-axis

C. Equally strong in buckling about X-axis and Y-axis

D. Any one of the above

What is the correct answer?

4

Soderberg relation is based on __________ of the material whereas all other failure relation for dynamic loading are based on ultimate strength of the material.

A. Elastic strength

B. Yield strength

C. Shear strength

D. None of these

What is the correct answer?

4

The permissible stress in the fillet weld is 100 N/mm². The fillet weld has equal leg lengths of 15 mm each. The allowable shearing load on the weldment per cm length of the weld is

A. 7.5 kN

B. 10.6 kN

C. 15 kN

D. 22.5 kN

What is the correct answer?

4

The taper on cotter varies from

A. 1 in 24 to 1 in 20

B. 1 in 15 to 1 in 10

C. 1 in 32 to 1 in 24

D. 1 in 48 to 1 in 24

What is the correct answer?

4

Stress concentration in cyclic loading is more serious in

A. Ductile materials

B. Brittle materials

C. Equally serious in both cases

D. Depends on other factors

What is the correct answer?

4

The angle of twist of shaft is

A. Directly proportional to (shaft diameter)²

B. Inversely proportional to (shaft diameter)²

C. Directly proportional to (shaft diameter)⁴

D. Inversely proportional to (shaft diameter)⁴

What is the correct answer?

4

According to I.B.R., when the thickness of boiler shell (t) is greater than 8 mm, then the diameter of rivet hole (d) is obtained by

A. Equating tearing resistance of the plate to the shearing resistance of the rivets

B. Equating tearing resistance of the plate to the crushing resistance of the rivets

C. Equating shearing resistance to the crushing resistance of the rivets

D. None of the above

What is the correct answer?

4

The most important dimension in the design of a nut is

A. Pitch diameter

B. Inside diameter

C. Outside diameter

D. Height

What is the correct answer?

4

In a flange coupling, the flanges are coupled together by means of

A. Bolts and nuts

B. Studs

C. Headless taper bolts

D. None of these

What is the correct answer?

4

When a bolt is subjected to shock loading, the resilience of the bolt should be considered in order to prevent breakage at the

A. Thread

B. Middle

C. Shank

D. Head