Home
Current Affairs January 2024

What is the correct answer?

4

The ratio of the shear stress to the principal stress on a principal plane is

A. 0

B. 1

C. 1/2

D. 1/3

Correct Answer :

A. 0


Related Questions

What is the correct answer?

4

The property of material, by which a given amount of energy is absorbed by it without plastic deformation, is called the

A. Resilience

B. Toughness

C. Ductility

D. Impact strength

What is the correct answer?

4

A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure at the gas temperature, which is termed as its

A. Aqueous tension

B. Saturated humidity

C. Vapor pressure

D. Absolute humidity

What is the correct answer?

4

Other parameters remaining same, the recrystallisation temperature of an alloy is lowered, when

A. Strain rate is increased

B. Grain size is increased

C. Prior cold deformation is increased

D. Not affected by any of the above parameters

What is the correct answer?

4

__________ is the process used for setting up compressive stresses in the surface of a metal to improve its fatigue strength.

A. Lancing

B. Shot peening

C. Slugging

D. Spinning

What is the correct answer?

4

Which of the following phenomenon/ phenomena is/are diffusion controlled?

A. Dislocation climb

B. Cross-slip

C. Twinning

D. Recrystallisation

What is the correct answer?

4

Out of the following, the joint produced by __________ has the lowest strength.

A. Soldering

B. Welding

C. Brazing

D. Riveting

What is the correct answer?

4

Gage pressure within a spherical droplet of a fluid is 'p'. What will be gage pressure within a bubble of the same size & of the same fluid?

A. p

B. 2 p

C. 0.5 p

D. 0.25 p

What is the correct answer?

4

All of the following alloying elements of steel increases hardness but sacrifice ductility, except

A. Nickel

B. Vanadium

C. Molybdenum

D. Chromium

What is the correct answer?

4

Wrought iron is not

A. Ductile & resistant to corrosion/rusting

B. Weldable easily

C. Having uniform strength in all directions

D. Having maximum tensile strength along the lines of slag distribution

What is the correct answer?

4

With increase in impurities in metals, their corrosion resistances

A. Increase

B. Decrease

C. Remain same

D. May increase or decrease; depending on the type of metal

What is the correct answer?

4

Two wires of the same radius & material having length in the ratio of 1 : 2 are stretched by the same force. The strain produced in the two wires will be in the ratio of

A. 1 : 1

B. 1 : 2

C. 2 : 1

D. 1 : 4

What is the correct answer?

4

The atmospheric temperature during melting of ice/snow (in the atmosphere)

A. Decreases

B. Increases

C. Remain same

D. May increase or decrease; depends on the altitude where snow melts

What is the correct answer?

4

Optical activity is a/an __________ property.

A. Additive

B. Constitutive

C. Both (A) & (B)

D. Neither (A) nor (B)

What is the correct answer?

4

Laser is a device to produce

A. Gamma rays

B. Microwaves

C. A beam of white light

D. A beam of coherent light

What is the correct answer?

4

Thermit welding uses the following energy source.

A. Electrical energy

B. Chemical energy

C. Energy of high velocity electrons

D. Heat generated by friction

What is the correct answer?

4

The heat treatment to which the steel wire containing > 0.25% carbon is subjected to is

A. Full annealing

B. Bright annealing

C. Patenting

D. None of these

What is the correct answer?

4

Blow off cock is provided in steam boiler to

A. Guard the boiler in case of abnormal rise in steam pressure

B. Drain out water and sludge during its repair

C. Regulate the supply of water in boiler

D. Put out the fire in the furnace when the water level in the boiler falls to unsafe limit

What is the correct answer?

4

About __________ ton of coke is required in a cupola to produce one ton of casting.

A. 0.03

B. 0.3

C. 0.8

D. 1.5

What is the correct answer?

4

Alloy powder manufactured by the following process have spherical shapes.

A. Electrochemical deposition

B. Gaseous reduction

C. Atomisation

D. Mechanical attrition

What is the correct answer?

4

In a totally irreversible isothermal expansion process for an ideal gas, ΔE = 0, ΔH = 0. Then ΔQ and ΔS will be

A. ΔQ = 0, ΔS=0

B. ΔQ = 0, ΔS = +ve

C. ΔQ = 0, ΔS = -ve

D. ΔQ = +ve, ΔS= +ve

What is the correct answer?

4

Volume of blast furnace slag is about __________ times the volume of hot metal (pig iron) of the same weight

A. 1.5

B. 3

C. 5

D. 7

What is the correct answer?

4

Out of the following __________ iron has the best capability to bear sudden & excessive shocks.

A. White

B. Cast

C. Wrought

D. Pig

What is the correct answer?

4

Which of the following is the most suitable abrasive for grinding high tensile strength materials?

A. Silicon carbide

B. Corundum

C. Aluminium oxide

D. Boron carbide

What is the correct answer?

4

As the fluid flow rate increases, the float of the Rotameter

A. Rises in the tube

B. Rotates at higher speed

C. Rotates at lower speed

D. Drops down in the tube

What is the correct answer?

4

Thermistors are used in __________ devices.

A. Voltage measuring

B. Temperature measuring

C. Temperature compensating

D. Both (B) & (C)

What is the correct answer?

4

At 100% relative humidity, the dew point temperature of moist air is

A. Less than the wet bulb temperature

B. More than the wet bulb temperature

C. Equal to the wet bulb temperature

D. Equal to the ambient temperature

What is the correct answer?

4

Which of the following is the largest quantum of pressure?

A. 1 kg/cm2

B. 1 bar

C. 1 atmosphere

D. 1 kilo Pascal

What is the correct answer?

4

Increasing the carbon content of steel

A. Reduces the upper shelf energy

B. Increasing the ductility transition temperature

C. Decreases brittleness

D. Decreases hardness

What is the correct answer?

4

Function of gear box is to

A. Reduce the speed

B. Obtain variable speed

C. Increase the speed

D. Produce high torque

What is the correct answer?

4

Tempering of a material does not improve its

A. Machinability

B. Toughness

C. Internal stress level

D. Softness