A. Copper
B. Platinum
C. Constantan
D. Chromium
Related Mcqs:
- The high expansion metal normally used in the bimetallic thermometer is _______________ temperature measurement?
A. Brass for low
B. Nickel alloys for high
C. Both A. & B.
D. Aluminium for all - Presence of even 0.005% of _____________ in copper makes it highly brittle, rendering it useless for wire-drawing?
A. Oxygen
B. Arsenic
C. Antimony
D. Bismuth - Dies for wire drawing are generally made of__________________?
A. Mild steel
B. Stainless steel
C. Carbides
D. High carbon steel - In cold working of metal as compared to its hot working____________________?
A. Cracks and blow holes are eliminated
B. Ductility and impact strength improves
C. Appreciable strain hardening is produced
D. Yield stress, hardness and fatigue strength is not at all affected - Hot working of lead is carried out at_________________?
A. 75° C
B. 373° K
C. 150° C
D. Room temperature - Gas holder of a gobar (cow-dung) gas plant is made of___________________?
A. Molybdenum stainless steel
B. Tin
C. Mild steel
D. Aluminium - Vycor, a widely used material for making ‘thermal wells’ in temperature measurement, is a_______________?
A. Cermet
B. Glass
C. Thermosetting plastic
D. Metallic alloy - Brass tubes are used in the manufacture of tubes of evaporators used in sugar and salt industries, mainly because of its ______________________?
A. High co-efficient of thermal expansion
B. Low thermal conductivity
C. High corrosion resistance
D. All A., B. and C. - Chrome vanadium steels usually contain 0.8 to 1.1% Cr, 0.25 to 0.35% C and < 0.25% V. It is ______________________?
A. Used for making axle & shafts of aeroplanes, automobiles and locomotives
B. Having poor fatigue resistance
C. Having poor toughness
D. Not helpful in producing cleaner steel due to oxidising action of vanadium - Valves in pipe size of 2″ and under are normally made of_______________________?
A. Wrought iron
B. Brass
C. Bronze
D. Monel
