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Current Affairs January 2024

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Thermistors are used in __________ devices.

A. Voltage measuring

B. Temperature measuring

C. Temperature compensating

D. Both (B) & (C)

Correct Answer :

D. Both (B) & (C)


Related Questions

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Screws are specified by their __________ diameters.

A. Minor

B. Major

C. Pitch

D. None of these

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Runge-Kutta method is used to solve a/an

A. Ordinary differential equation of nth order

B. Simultaneous non-linear equation

C. Linear differential equation

D. None of these

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Out of the following the refractive index is the highest for

A. Glass

B. Diamond

C. Brine

D. Kerosene

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__________ is a non volatile film forming constituent of a paint.

A. Thinner

B. Dryer

C. Drying oil

D. None of these

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Plasma is

A. A high temperature neutral gas

B. Nothing but ionised gas

C. A source of steady and highest controllable pressure

D. Formed at very low temperature

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Which of the following performance characteristics of a S.I engine is not affected by the front end volatility of the petrol used?

A. Vapour locking

B. Hot starting

C. Spark plug fouling

D. All 'a', 'b' & 'c'

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All the atoms of the world comprise of electrons, proton & neutron except that of __________ atom in which neutron is absent.

A. Deuterium

B. Hydrogen

C. Neon

D. Helium

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The excess air required for the combustion of pulverised coal is of the order of about __________ percent.

A. 5

B. 15

C. 30

D. 45

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Air standard Otto cycle is more efficient than the diesel cycle for the same

A. Heat addition & compression ratio

B. Heat addition & pressure

C. Compression ratio & pressure

D. Cylinder dimension & rpm

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With decrease in the grain size of a material, its creep resistance

A. Increases

B. Decreases

C. Remain constant

D. Either (A) or (B); depends on the material

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Elimination of brittleness resulting from welding of saw blades is done by __________ of the welded portion.

A. Annealing

B. Toughening

C. Work hardening

D. Tempering

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

A. One

B. Two

C. Three

D. None of these

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At absolute zero temperature, for any reaction involving condensed phases

A. Δ G° = 0 , Δ H° = 0

B. Δ H° = 0 , Δ S° = 0

C. Δ S° = 0 , Δ E° = 0

D. Δ S° = 0 , Δ Cp° = 0

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Corrosion of metals cannot be prevented by its

A. Tempering

B. Chromising

C. Aluminising

D. Alloying

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The most economical channel section for the fluid flow is the one for which the discharge is maximum for a given cross-sectional area. Vertical velocity distribution in an open channel for laminar flow can be assumed to be

A. Parabolic

B. Hyperbolic

C. Straight line

D. None of these

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The minimum temperature to which the water can be cooled in a cooling tower is the __________ temperature of air.

A. Ambient

B. Dry bulb

C. Dew point

D. Wet bulb

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Resistance of an electrical conductor is proportional to its (where, l = length and A = cross-sectional area of the conductor)

A. A

B. l

C. A2

D. Both 'a' & 'b'

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Which of the following properties of a solid is not dependent on crystal imperfection?

A. Ductility

B. Semi-conductivity

C. Melting point

D. Yield stress

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__________ metal is used as a bearing liner material.

A. Pewter

B. White

C. Babbitt

D. Gun

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Which of the following materials has the maximum shrinkage allowance?

A. Brass

B. Cast iron

C. Lead

D. Aluminium alloy

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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

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Load cells used for the measurement of weight has

A. Compact & rugged construction with an accuracy of 0.1 to 1%

B. No moving parts and incurs negligible deflection under load

C. Provision of thermal compensation and is hermetically sealed

D. All 'a', 'b' & 'c'

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Gantt charts are used for streamlining the

A. Inventory control

B. Production schedule

C. Sales forecasting

D. Quality control

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Thermal equivalent of electrical power in practical calculation is __________ kcal/kWh.

A. 746

B. 3000

C. 1000

D. 550

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In a drilling process, the metal is removed by both shearing & extrusion. General purpose drills are made of

A. Stainless steel

B. Mild steel

C. High speed steel

D. High carbon steel

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Pick out the correct combination about the role of various additives used in polymers.

A. Plasticiser: increases the polymer strength

B. Heat stabiliser: increases the maximum service temperature

C. Fillers: Does not affect the property of polymer but increases its weight

D. Lubricants: increases the flexibility of polymers

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__________ of grey cast iron produces white cast iron.

A. Tempering

B. Rapid heating

C. Rapid cooling

D. Slow cooling

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At the point of boundary layer separation in fluid flow, the

A. Shear stress is maximum

B. Velocity gradient is flat

C. Density variation is maximum

D. Shear stress is zero

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According to maximum shear stress failure criterion, yielding in material occurs, when the maximum shear stress is equal to __________ times the yield stress.

A. 0.5

B. 2

C. √2

D. √3/2

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Eutectic reaction for iron-carbon system occurs at a temperature of __________ °C.

A. 723

B. 959

C. 1147

D. 1493