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Letchaysaybeejen > EXAMVEDA > Flashcards

EXAMVEDA Flashcards

1
Q

Which of the following will resit maximum shock and vibration without cracking?

A

C. Malleable Iron

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2
Q

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

A

THREE (3)

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3
Q

The most commonly used combustion
system manufactured in India for the thermal power plant boilers is the ____ combustion system.

A

PULVERISED FUEL

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3
Q

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

A

FLAKES

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4
Q

Isotropic materials have the same ____ in all directions.

A

ELASTIC PROPERTIES

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5
Q

First empirical temperature scale conceived is the ____temperature scale.

A

FARHENHEIT

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6
Q

If a heat transfer surface is pock-marked with a number of cavities, then as compared to a smooth surface the heat transfer by ___ will not increase.

A

CONVECTION

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7
Q

PICK OUT THE WRONG STATEMENT
A. Molecules with symmetrical arrangements (e.g., CH4 or CCl4) are non-polar
B. Generally, nonpolar compounds are chemically inactive, conduct electricity poorly and do not ionize
C. Most of the hydrocarbons are non-polar
D. None of these

A

D. None of these

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8
Q

Materials having resistivity from 1 to 100 ohm-cm (measurement of the volume of resistivity of a semiconductive material) is termed as ______.

A

SEMI-CONDUCTOR

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9
Q

Alloys having more than 80% copper are generally more _____.

A

CORROSION RESISTANT

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10
Q

Which of the following is not used as a fuel in rocket propellant?

A

B. LIQUID OXYGEN

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11
Q

Toughness of a material is measured by the _____.

A

UNIVERSAL TESTING MACHINE

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12
Q

Fatigue resistance of a material is measured by the ______.

A

ENDURANCE LIMIT

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13
Q

The stress at which a metal fails by fatigue lines?

A

C. IN THE ELASTIC RANGE.

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14
Q

Pick out the wrong statement. If the net positive suction head (NPSH) requirement of a pump is not satisfied, then..

A

B. ITS EFFICIENCY WILL NOT BE AFFECTED.

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15
Q

The ratio of coil diameter to wire diameter of a spring is called the

A

SPRING INDEX

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16
Q

Pick out the wrong statement about fast breeder reactor.

A

A. USES MOLTEN SODIUM AS MODERATOR.

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17
Q

Coke is added in the blast furnace to

A

REDUCE AND MELT THE IRON ORE.

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18
Q

Castability of aluminum is increased by the addition of _____ in it.

A

SILICON

19
Q

Speed of a submarine in deep sea & that of an aeroplane is measure by a/an ____.

A

PITOT TUBE

20
Q

Atomic ___ of an element is a whole number.

A

NUMBER

20
Q

Specific heat of an ideal gas depends upon its _____.

A

TEMPERATURE

21
Q

Rankine cycle comprises of two isothermal and two ____ processes.

A

ISOBARIC

22
Q

____ is produced by the annealing of white cast iron.

A

MALLEABLE IRON

23
Q

Brinell Hardness Number (BHN) for talc is approximately in the range of ____.

A

20-30

24
Q

Gantt charts are used for streamlining the ___.

A

PRODUCTION SCHEDULE

25
Q

Materials having _____lattice structure are usually the most ductile.

A

FACE CENTERED CUBIC (FCC)

26
Q

Copper is not present as an alloying constituent in _____.

A

NICHROME

27
Q

Kinematic viscosity of water as compared to that of air is ____.

A

15% LESS

28
Q

Area under the stress-strain curve up to the _____ is referred to as the modulus of resilience.

A

PROPORTIONAL LIMIT

29
Q

_____ test can be termed as the semi-destructive test.

A

HARDNESS

30
Q

A 2 kg object weight 1.8 kgf on a spring balance. The value of “g” at that location in m/sec2 is _____.

A

8.82

31
Q

The weight of a body at the center of the earth is _____.

A

ZERO (0)

32
Q

The efficiency of a Carnot heat engine operating between absolute temperatures T1 and T2 (when, T1 > T2) is given by T1- T2 T1. The co-efficient of performance (C.O.P) of a Carnot heat pump operating between T1 and T2 is given by T2 T1-T2.

A
33
Q

Lead is poured into the joint between two ______ pipes.

A

CAST IRON

34
Q

Free oxygen is removed from boiled feed water, because it is ______.

A

CORROSIVE

35
Q

Inspection of surface and sub-surface cracks in non-magnetic alloys is done by ______ testing method.

A

DYE PENETRANT

36
Q

For a thermodynamic system undergoing a process, which of the following pairs best expresses the relationship similar to that expressed by the pressure-volume plot.

A

– A. TEMPERATURE-ENTROPY.

37
Q

In “Imperial Smelting Process” for extraction of zinc, zinc vapour thus produced is quenched in the external condenser by the use of the following:

A

D. RAIN OF MOLTEN LEAD.

38
Q

Milligram of KOH required to saponify 1 gm of oil is called _____.

A

SAPONIFICATION

38
Q

A controller action in which there is a continuous relation between values of controlled variable and the rate of change of controlled output signal is called the _____ action.

A

INTEGRAL

39
Q

Angular displacement can be measured suitably by a ______.

A

SHAFT ENCODER

40
Q

Cold cracking in the heat affected zone of a high strength steel weld can take place because of the ______.

A

MARTENSITE FORMATION

41
Q

Which of the following are made out of the carbon steel having carbon content of 0.9 to 1%?

A

A. SMALL PUNCHES, BROACHES REAMERS AND SPRINGS.

42
Q

Alumina, Silica, Lime and Iron oxide are the basic raw material for the manufacture of Portland cement. The component of Portland cement which first hardens is.

A

A. 5CaO + 3 Al2O3.

43
Q

Function of feed check valve in a boiler is to?

A

C. PREVENT THE BACK FLOW OF WATER.

43
Q

Cold chisel and hammers are made of ____.

A

HIGH CARBON STEEL.

Letchaysaybeejen (10 decks)

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