Home
Current Affairs January 2024

What is the correct answer?

4

A material being tested for endurance strength is subjected to the __________ load.

A. Impact

B. Completely reversed

C. Dynamic

D. Static & dynamic

Correct Answer :

B. Completely reversed


Related Questions

What is the correct answer?

4

L.D. (Linz-Donawitz) converter is used in the production of

A. Copper

B. Steel

C. Zinc

D. Aluminium

What is the correct answer?

4

Which of the following is not the commercial name of poly-methyl-methacrylate (PMMA)?

A. Styrofoam

B. Lucite

C. Perspex

D. Plexiglass

What is the correct answer?

4

__________ temperature remains constant during adiabatic saturation process of unsaturated air.

A. Dew point

B. Dry bulb

C. Wet bulb

D. None of these

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

Parallel straight line pattern of temperature distribution for both hot and cold fluids is observed in case of heat exchanger of the type

A. Parallel flow with equal heat capacities

B. Counter flow with equal heat capacities

C. Counter flow with unequal heat capacities

D. Parallel flow with unequal heat capacities

What is the correct answer?

4

There are one octahedral void and __________ tetrahedral void in the closest packing of atoms.

A. One

B. Two

C. Three

D. None of these

What is the correct answer?

4

The most suitable material of construction for a sewer to carry sewage under high pressure is

A. Asbestos cement

B. Steel

C. Cement concrete

D. Stoneware

What is the correct answer?

4

The materials which fracture even at small strains are termed as brittle, while those materials which exhibit an appreciable deformation before failure are termed as

A. Rigid

B. Tough

C. Ductile

D. Plastic

What is the correct answer?

4

Fire refining process is employed in case of

A. Tin

B. Copper

C. Zinc

D. Aluminium

What is the correct answer?

4

The diffusion co-efficient of Ni in Cu at 1000 K is 1.93 × 10-16 m2S-1 and it is 1.94 × 10-14 m2S- 1 at 1200 K. The activation energy (in k. J.mole-1) for the diffusion of Ni in Cu is

A. 130

B. 180

C. 230

D. 250

What is the correct answer?

4

Pick out the wrong statement.

A. Copper is the metal having the highest electronic conductivity

B. Hardenability & Weldability of metals are inversely related

C. Covalent bonding formed by sharing of electrons is present in all semi-conductor materials

D. Glass transition temperature applies to 'polymers' but not to 'glasses'

What is the correct answer?

4

In __________ process, there is an increase in entropy with no degradation of energy.

A. Isothermal expansion

B. Isochoric heat addition

C. Polytropic expansion

D. Isobaric heat addition

What is the correct answer?

4

The material used for coating the welding electrode is termed as the

A. Flux

B. Slag

C. Protective layer

D. Binder

What is the correct answer?

4

Solute atoms which cause yield point phenomenon in mild steel are/is

A. Aluminium

B. Boron

C. Carbon

D. Nitrogen

What is the correct answer?

4

Tempering of a material does not improve its

A. Machinability

B. Toughness

C. Internal stress level

D. Softness

What is the correct answer?

4

Dryness factor of steam is defined as the ratio of the mass of vapor in the mixture to the mass of the mixture. Dryness factor of steam is measured by a __________ calorimeter.

A. Bomb

B. Throttling

C. Junker's

D. Boy's

What is the correct answer?

4

Which of the following materials has the poorest electrical conductivity?

A. Carbon

B. Aluminium

C. Silver

D. Stainless steel

What is the correct answer?

4

Steel balls are manufactured by

A. Sintering

B. Casting

C. Cold heading

D. Spinning

What is the correct answer?

4

The wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer registers a higher temperature than a wet bulb thermometer except at __________ percent relative humidity.

A. 0

B. 100

C. 50

D. None of these

What is the correct answer?

4

Magnesium is present in

A. Haemoglobin

B. Chlorophyll

C. Hypo solution

D. None of these

What is the correct answer?

4

The specific gravity of coal depends mainly on its __________ content.

A. Carbon

B. Volatile matter

C. Ash

D. Moisture

What is the correct answer?

4

If the head is doubled in & centrifugal pump, the power required will increase in the ratio of

A. 23

B. 23/2

C. 25/2

D. 21/3

What is the correct answer?

4

Plastics as a material of construction suffer from the drawback of low

A. Machinability

B. Density

C. Strength

D. Plastic deformation

What is the correct answer?

4

The following thermocouple may be used for measuring temperature upto 1873°K.

A. Chromel-alumel

B. Copper-constantan

C. Platinum-platinum rhodium

D. Iron-constantan

What is the correct answer?

4

Copper deposits are found in India at the following location:

A. Kudremukh

B. Kolar

C. Khetri

D. Ramagundam

What is the correct answer?

4

Milk is fat dispersed in water. It is an example of

A. Suspension

B. Emulsion

C. Gel

D. Solution

What is the correct answer?

4

Metallic surveying tapes are made of __________ which has a low co-efficient of expansion & enough strength.

A. Invar

B. Hastelloy

C. Duralumin

D. Monel metal

What is the correct answer?

4

__________ fluid force is not considered in the Navier-Stokes equation.

A. Turbulent

B. Viscous

C. Gravity

D. Pressure

What is the correct answer?

4

Which of the following is an acidic constituent of B.F. slag?

A.

B. FeO

C. MgO

D. CaO

What is the correct answer?

4

Oxygen cylinders used for autogenous (cutting/welding) purposes are

A. Seamless & made of steel

B. Heat treated before use

C. Made by sand casting

D. Welded steel cylinders