Home

What is the correct answer?

4

A spring material should have low

A. Elastic limit

B. Deflection value

C. Fatigue resistance

D. None of these

Correct Answer :

D. None of these


Related Questions

What is the correct answer?

4

An atom bomb works on the principle of

A. Nuclear fission

B. Nuclear fusion

C. Both the nuclear fission & fusion

D. Ionisation

What is the correct answer?

4

One face of a furnace wall is at 1030°C and the other face is exposed to room temperature (30°C). If the thermal conductivity of furnace wall is 3 W. m- 1. k-1 and the wall thickness is 0.3 m, the maximum heat loss (in W/m) is

A. 100

B. 900

C. 9000

D. 10000

What is the correct answer?

4

Basic open hearth furnace (BOF) is not used for producing __________ steel.

A. Killed

B. Rimming

C. High alloy

D. None of these

What is the correct answer?

4

Material of construction of foundry crucible is

A. Lead

B. Stainless steel

C. Graphite

D. Cast iron

What is the correct answer?

4

In a good rimming steel

A. Carbon and silicon should be low

B. Silicon should be low but carbon should be high

C. Both silicon & carbon should be high

D. Silicon should be high but carbon should be low

What is the correct answer?

4

__________ is used as a material of construction for the blade of power saw.

A. Wrought iron

B. Stainless steel

C. Mild steel

D. High speed steel

What is the correct answer?

4

The ratio of mass of a neutron to that of an electron is about 1839. What is the ratio of the mass of a proton to that of an electron?

A. 159

B. 1837

C. 2537

D. 10000

What is the correct answer?

4

Joining of thin foils is preferred to be done by

A. Gamma rays

B. X-rays

C. Microwaves

D. Gas welding

What is the correct answer?

4

Inertial forces are obtained, when the elastic forces are multiplied by __________ number.

A. Mach

B. Froude

C. Reynolds

D. Euler

What is the correct answer?

4

Capacity & power requirement for an air compressor working at high altitude compared to sealevel will be

A. More

B. Less

C. Same

D. Either more or less; depends on the climatic conditions

What is the correct answer?

4

Triple point of water is

A. 0°F

B. 492°R

C. 0°K

D. -273°C

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

The type of pump used for lifting large quantity of sewage is a __________ pump.

A. Gear

B. Centrifugal

C. Reciprocating

D. Plunger

What is the correct answer?

4

Young's modulus of a material is the measure of its

A. Stiffness

B. Malleability

C. Creep resistance

D. Tensile strength

What is the correct answer?

4

Metal shots used in shot blasting are made of

A. Stellite

B. Steel

C. Bronze

D. Lead

What is the correct answer?

4

Brazing is the joining of metals

A. Without melting the base metal

B. With a non-ferrous filler

C. Both (A) & (B)

D. Neither (A) nor (B)

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

A material is capable of resisting softening at high temperature, because of its property termed as

A. Hot temper

B. Hot hardness

C. Fatigue

D. Creep

What is the correct answer?

4

Presence of nickel & chromium in steel does not raise its

A. Elastic limit

B. Machining properties

C. Ductility

D. Resilience

What is the correct answer?

4

In practice, the compression ratio of compression-ignition (CI) engine ranges from

A. 15 to 25

B. 5 to 10

C. 40 to 55

D. 60 to 70

What is the correct answer?

4

The boiling & freezing points on a newly defined temperature scale in degree 'D' are 400°D & 100°D respectively. The temperature reading corresponding to 60°C on this new temperature scale will be equal to __________ °D.

A. 140

B. 180

C. 240

D. 280

What is the correct answer?

4

Evaporative cooling process employs a combination of cooling and humidification in which the

A. Sensible heat is added

B. Sensible heat is removed and the latent heat is added

C. Latent heat is removed

D. Sensible heat is added and latent heat is removed

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

What is the correct answer?

4

Primary designation of steel is based on its

A. Hardness & tensile strength

B. Carbon content

C. Iron content

D. Alloying elements content

What is the correct answer?

4

Carbon is present in the form of __________ in grey cast iron.

A. Spheroids

B. Nodular aggregates of graphite

C. Flakes

D. Cementite

What is the correct answer?

4

A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through it, because it heats up the crystals & breaks the covalent bonds resulting in __________ electrons.

A. Lack of free

B. Excess of

C. Decrease in

D. None of these

What is the correct answer?

4

Secondary hardening in steels arises out of the

A. Precipitation of fine alloy carbides at high temperatures

B. Refinement of ferrite grain size by working

C. Decomposition of retained austenite upon heat treatment

D. Precipitation of complex inter-metallic upon heat treatment

What is the correct answer?

4

During sensible heating of humid air

A. Relative humidity increases

B. Dew point remains constant

C. Dry bulb & wet bulb temperature increases

D. Both 'b' & 'c'

What is the correct answer?

4

Leakage in a cooking gas cylinder is detected by

A. Radio-isotopes

B. Pouring soap solution on the surface and locating the gas bubbles

C. Halide torch

D. Pungent smell of mercaptans present in the gas

What is the correct answer?

4

For a first order chemical reaction, the concentration of the reactant decreases __________ with time.

A. Linearly

B. Exponentially

C. Logarithmically

D. Inversely