8 >>__________ circuit is most commonly used to measure strain with the help of a strain gauge. ?
(A) Ballast
(B) Voltage balancing potentiometric
(C) Simple current sensitive
(D) none of these
9 >>Which of the following is normally not found in both the S.I. (petrol) & C.I. (diesel) engines ? ?
(A) Air filter
(B) Fuel injector
(C) Exhaust silencer
(D) Battery
10 >>__________ is a special constituent of chlorophyll without which photosynthesis is not possible. ?
(A) Calcium
(B) Nitrogen
(C) Phosphorous
(D) Hydrogen
11 >>__________ 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
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12 >>During decarburising of a plain carbon steel, the thickness of ferrite layer growth is proportional to ?
(A) time
(B) square root of time
(C) square of time
(D) cube of time
13 >>Laser welding is widely employed in the __________ industries. ?
(A) electronic
(B) structural
(C) process
(D) heavy
14 >>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
15 >>Which of the following is used to produce draught in the locomotive boilers ? ?
(A) Chimney.
(B) Induced draught fan.
(C) Forced draught fan.
(D) Steam jet arrangement.
16 >>Temper brittleness of a material can be fairly detected by the __________ test. ?
(A) fatigue
(B) notched bar impact
(C) tensile
(D) hardness
17 >>When the wavelength of incident X-rays increases, the angle of diffraction ?
(A) decreases.
(B) increases.
(C) remains constant.
(D) shows no systematic variation.
18 >>The elastic strain energy of a unit length of an edge dislocation as compared to that of a screw dislocation is ?
(A) more
(B) equal
(C) less
(D) double
19 >>The specific gravity of coal depends mainly on its __________ content. ?
