A. Carbon
B. Silicon carbide
C. Aluminium oxide
D. Tungsten
✅ The correct answer is option C.
Engineering
Boost your preparation with the latest Engineering MCQs with answers and explanations. Our collection covers civil engineering, electrical engineering, mechanical engineering, electronics, software engineering, and other core subjects. These multiple-choice questions are designed for students, competitive exam aspirants, and professionals preparing for NTS, PPSC, FPSC, CSS, PMS, PEC exams, university entry tests, and job interviews. Practice online with updated Engineering MCQs to strengthen concepts, improve technical knowledge, and perform better in exams and recruitment tests.
662. The tensile load-elongation curve of a metal does not describe
A. Work hardening
B. Yield stress
C. Anisotropy index
D. Necking strain
✅ The correct answer is option C.
663. Milligram of KOH required to saponify 1 gm of oil is called its __________ number.
A. Saponification
B. Acid
C. Precipitation
D. Emulsion
✅ The correct answer is option A.
664. Coarse grained steels have
A. Low toughness
B. No tendency to distort
C. High density
D. Very high toughness
✅ The correct answer is option B.
665. When a copper ball is heated, the largest percentage increase will be in its
A. Radius
B. Area
C. Mass
D. Volume
✅ The correct answer is option D.
666. While the bin cards are used in the effective stores management, the queing theory is associated with the __________ time.
A. Waiting
B. Idle
C. Inspection
D. Tool replacement
✅ The correct answer is option A.
667. The starting of a car takes time in winter, because the
A. Octane number of fuel is decreased
B. Fuel supply for ignition is not sufficient
C. Vaporisation of the fuel is decreased
D. Pour point of fuel decreases
✅ The correct answer is option C.
668. Depreciation of machines fails under the indirect expenses head. As per income tax regulations, it is calculated by the __________ method.
A. Diminishing balance
B. Sinking fund
C. Multiple straight line
D. Sum of the years digit
✅ The correct answer is option A.
669. 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
✅ The correct answer is option B.
670. Speed of a submarine in deep sea & that of an aeroplane is measured by a/an
A. Pitot tube
B. Hot wire anemometer
C. Rotameter
D. Stroboscope
✅ The correct answer is option A.