A. Surgical instruments
B. Powerful magnets
C. Chemical equipments
D. Boiler tubes
Related Mcqs:
- Addition of 2% nickel in steel makes it suitable for making ___________________?
A. Electronic valves
B. Boiler plates, rivets etc.
C. Turbine blades
D. Connecting rod - Which of the following is universally employed as the low expansion metal in the bimetallic thermometer, which is an iron-nickel alloy containing 36% nickel and has very low co-efficient of expansion (1/20th of ordinary metals) ?
A. Invar
B. Constantan
C. Chromel
D. Alumel - Presence of cobalt in steel improves its____________________?
A. Cutting ability
B. Corrosion resistance
C. Tensile strength
D. None of these - Addition of ______________ to the steel helps in increasing the residual magnetism in steel used for making magnets?
A. Chromium
B. Nickel
C. Tungsten
D. Cobalt - A steel alloy containing 36% nickel is called _____________________, which has a zero co-efficient of expansion?
A. Austenitic stainless steel
B. Heat resisting steel
C. Invar
D. High speed steel - Presence of nickel in steel improves its_________________?
A. Corrosion resistance
B. Cutting ability
C. Wear resistance
D. All A., B. and C. - Austenitic manganese steel used for making jaws of crushing machines contains about ______________ percent manganese?
A. 1.5-2
B. 3.5-4.5
C. 7-9
D. 12-14 - Steel balls for ball bearings are generally made of ______________ steel?
A. Cast
B. Stainless
C. Free carbon
D. Carbon chrome - Straight silicon steel (containing Si from 0.5 to 5%) because of their low hysteresis loss and high magnetic permeability are used for electrical appliances. Which of the following electrical appliances made of silicon steel contains maximum percentage of silicon (about 4%) ?
A. Armature of small motors/generators
B. Generators and small motors
C. Induction motors
D. High frequency transformers - 18/8 steel is a/an __________ stainless steel ?
A. Austenitic
B. Ferritic
C. Martensitic
D. None of these
