Home
Current Affairs January 2024

What is the correct answer?

4

Fabric belts are used in industrial applications because

A. They are cheap

B. They can work at high temperature

C. They are unaffected by moisture and humidity

D. None of the above

Correct Answer :

A. They are cheap


Related Questions

What is the correct answer?

4

The fatigue stress concentration factor is defined as

A. The ratio of endurance limit with stress concentration to the endurance limit without stress concentration

B. The ratio of endurance limit without stress concentration to the endurance limit with stress concentration

C. The product of the endurance limits with and without stress concentration

D. All of the above

What is the correct answer?

4

Which of the following screw thread is adopted for power transmission in either direction?

A. Acme threads

B. Square threads

C. Buttress threads

D. Multiple threads

What is the correct answer?

4

The material commonly used for crane hooks is

A. Cast iron

B. Wrought iron

C. Mild steel

D. Aluminium

What is the correct answer?

4

For steel, the ultimate strength in shear as compared to ultimate strength in tension is

A. 1/2

B. 1/3

C. 1/4

D. 2/3

What is the correct answer?

4

Buttress threads are usually found on

A. Screw cutting lathes

B. Feed mechanisms

C. Spindles of bench vices

D. Railway carriage couplings

What is the correct answer?

4

When a helical compression spring is cut into halves, the stiffness of the resulting spring will be

A. Same

B. Double

C. One-half

D. One-fourth

What is the correct answer?

4

When two nonintersecting and non-coplanar shafts are connected by gears, the arrangement is known as

A. Spur gearing

B. Helical gearing

C. Bevel gearing

D. Spiral gearing

What is the correct answer?

4

Auto frettage is the method of

A. Joining thick cylinders

B. Calculating stresses in thick cylinders

C. Pre-stressing thick cylinders

D. Increasing the life of thick cylinders

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

When the length of the journal is equal to the diameter of the journal, then the bearing is said to be a

A. Short bearing

B. Long bearing

C. Medium bearing

D. Square bearing

What is the correct answer?

4

A single strap butt joint is always in __________ shear.

A. Single

B. Double

C. Triple share

D. None of these

What is the correct answer?

4

Allen bolts are

A. Self locking bolts

B. Designed for shock load

C. Used in aircraft application

D. Provided with hexagonal depression in head

What is the correct answer?

4

The rated life of a bearing varies

A. Directly as load

B. Inversely as square of load

C. Inversely as cube of load

D. Inversely as fourth power of load

What is the correct answer?

4

Which is correct statement?

A. A member made of steel will generally be more rigid than a member of equal load carrying ability made of cast iron

B. A member made of cast iron will generally be more rigid than a member of equal load carrying ability made of steel

C. Both will be equally rigid

D. Which one is rigid will depend on several other factors

What is the correct answer?

4

A steel containing upto 0.15% carbon is known as

A. Mild steel

B. Dead mild steel

C. Medium carbon steel

D. High carbon steel

What is the correct answer?

4

According to I.B.R., the factor of safety of riveted joint should not be less than

A. 1

B. 2

C. 3

D. 4

What is the correct answer?

4

In order to obtain bolt of uniform strength

A. Increase shank diameter

B. Increase its length

C. Drill an axial hole through head up to threaded portion so that shank area is equal to root area of thread

D. Tighten die bolt properly

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 maximum shear stress theory is used for

A. Brittle materials

B. Ductile materials

C. Plastic materials

D. Nonferrous materials

What is the correct answer?

4

In helical gears, the distance parallel to the axis, between similar faces of adjacent teeth, is called

A. Normal pitch

B. Axial pitch

C. Diametral pitch

D. Module

What is the correct answer?

4

In helical gears, the right hand helixes on one gear will mesh __________ helixes on the other gear.

A. Right hand

B. Left hand

C. Both A and B

D. None of these

What is the correct answer?

4

Two shafts will have equal strength, if

A. Diameter of both the shafts is same

B. Angle of twist of both the shafts is same

C. Material of both the shafts is same

D. Twisting moment of both the shafts is same

What is the correct answer?

4

In designing a sleeve coupling, length of the sleeve is taken as (where d = Diameter of the shaft)

A. d + 17 mm

B. 2d + 13 mm

C. 2d + 20 mm

D. 3.5d

What is the correct answer?

4

The form factor of a helical gear __________ with the increase in the helix angle.

A. Increases

B. Decreases

C. Remains constant

D. None of these

What is the correct answer?

4

The objective of idler pulley in belt drive is to

A. Decrease the tendency of belt to slip

B. Increase the power transmission capacity

C. Increase the wrap angle and belt tension

D. All the above objectives

What is the correct answer?

4

If the centre distance of the mating gears having involute teeth is increased, then the pressure angle

A. Increases

B. Decreases

C. Remains unchanged

D. None of these

What is the correct answer?

4

According to I.B.R., when the thickness of the boiler shell (t) is less than 8 mm, then the diameter of the 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

Which one of the following is a positive drive?

A. V-belt drive

B. Rope drive

C. Crossed flat belt drive

D. Chain drive

What is the correct answer?

4

Rankine's theory is used for

A. Brittle materials

B. Ductile materials

C. Elastic materials

D. Plastic materials

What is the correct answer?

4

Which of the following coupling is used to connect two shafts which have both lateral and angular misalignment?

A. Bushed pin type coupling

B. Universal coupling

C. Oldham coupling

D. All of these