EXAMVEDA Flashcards
Which of the following will resit maximum shock and vibration without cracking?
C. Malleable Iron
Volume of blast furnace slag is about _____ times the volume of hot metal (pig iron) of the same weight.
THREE (3)
The most commonly used combustion
system manufactured in India for the thermal power plant boilers is the ____ combustion system.
PULVERISED FUEL
Carbon is present in the form of ___ in grey cast iron.
FLAKES
Isotropic materials have the same ____ in all directions.
ELASTIC PROPERTIES
First empirical temperature scale conceived is the ____temperature scale.
FARHENHEIT
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.
CONVECTION
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
D. None of these
Materials having resistivity from 1 to 100 ohm-cm (measurement of the volume of resistivity of a semiconductive material) is termed as ______.
SEMI-CONDUCTOR
Alloys having more than 80% copper are generally more _____.
CORROSION RESISTANT
Which of the following is not used as a fuel in rocket propellant?
B. LIQUID OXYGEN
Toughness of a material is measured by the _____.
UNIVERSAL TESTING MACHINE
Fatigue resistance of a material is measured by the ______.
ENDURANCE LIMIT
The stress at which a metal fails by fatigue lines?
C. IN THE ELASTIC RANGE.
Pick out the wrong statement. If the net positive suction head (NPSH) requirement of a pump is not satisfied, then..
B. ITS EFFICIENCY WILL NOT BE AFFECTED.
The ratio of coil diameter to wire diameter of a spring is called the
SPRING INDEX
Pick out the wrong statement about fast breeder reactor.
A. USES MOLTEN SODIUM AS MODERATOR.
Coke is added in the blast furnace to
REDUCE AND MELT THE IRON ORE.
Castability of aluminum is increased by the addition of _____ in it.
SILICON
Speed of a submarine in deep sea & that of an aeroplane is measure by a/an ____.
PITOT TUBE
Atomic ___ of an element is a whole number.
NUMBER
Specific heat of an ideal gas depends upon its _____.
TEMPERATURE
Rankine cycle comprises of two isothermal and two ____ processes.
ISOBARIC
____ is produced by the annealing of white cast iron.
MALLEABLE IRON
Brinell Hardness Number (BHN) for talc is approximately in the range of ____.
20-30
Gantt charts are used for streamlining the ___.
PRODUCTION SCHEDULE
Materials having _____lattice structure are usually the most ductile.
FACE CENTERED CUBIC (FCC)
Copper is not present as an alloying constituent in _____.
NICHROME
Kinematic viscosity of water as compared to that of air is ____.
15% LESS
Area under the stress-strain curve up to the _____ is referred to as the modulus of resilience.
PROPORTIONAL LIMIT
_____ test can be termed as the semi-destructive test.
HARDNESS
A 2 kg object weight 1.8 kgf on a spring balance. The value of “g” at that location in m/sec2 is _____.
8.82
The weight of a body at the center of the earth is _____.
ZERO (0)
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.
Lead is poured into the joint between two ______ pipes.
CAST IRON
Free oxygen is removed from boiled feed water, because it is ______.
CORROSIVE
Inspection of surface and sub-surface cracks in non-magnetic alloys is done by ______ testing method.
DYE PENETRANT
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. TEMPERATURE-ENTROPY.
In “Imperial Smelting Process” for extraction of zinc, zinc vapour thus produced is quenched in the external condenser by the use of the following:
D. RAIN OF MOLTEN LEAD.
Milligram of KOH required to saponify 1 gm of oil is called _____.
SAPONIFICATION
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.
INTEGRAL
Angular displacement can be measured suitably by a ______.
SHAFT ENCODER
Cold cracking in the heat affected zone of a high strength steel weld can take place because of the ______.
MARTENSITE FORMATION
Which of the following are made out of the carbon steel having carbon content of 0.9 to 1%?
A. SMALL PUNCHES, BROACHES REAMERS AND SPRINGS.
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. 5CaO + 3 Al2O3.
Function of feed check valve in a boiler is to?
C. PREVENT THE BACK FLOW OF WATER.
Cold chisel and hammers are made of ____.
HIGH CARBON STEEL.
