The factor of safety for brittle materials (having elongation < 5%) is based on the __________ stress. September 6, 2025 by Admin A. Yield B. Proof C. Ultimate D. None of these ✅ The correct answer is option C.
Milk is fat dispersed in water. It is an example of September 6, 2025 by Admin A. Suspension B. Emulsion C. Gel D. Solution ✅ The correct answer is option B.
Damage to metal surface by mechanical action is called September 6, 2025 by Admin A. Pitting B. Corrosion C. Erosion D. None of these ✅ The correct answer is option C.
In a casting, cold shut defect is caused by September 6, 2025 by Admin A. Low pounhg temperature B. Melt-mould reactions C. Faulty gating system D. Very low mould permeability ✅ The correct answer is option A.
The stress at which a metal fails by fatigue lies September 6, 2025 by Admin A. Near the fracture point of the stress-strain curve B. In the plastic range C. In the elastic range D. None of these ✅ The correct answer is option C.
A material in which the atoms are arranged regularly in some directions but not in others, is termed as ‘mesomorphous material’; an example of which is September 6, 2025 by Admin A. Lead B. Glass C. Mica D. Silver ✅ The correct answer is option A.
Fibre glass is a composite material of September 6, 2025 by Admin A. Glass fibre in a polymer matrix B. Glass fibre in a metallic matrix C. Polymer fibre in a glassy matrix D. Both B & C ✅ The correct answer is option A.
Austempering of steel requires.it to be heated to 875°C followed by sudden cooling to 250-525°C, thereby changing austenite to September 6, 2025 by Admin A. Sorbite B. Bainite C. Martensite D. Troostite ✅ The correct answer is option B.
Diamagnetic materials September 6, 2025 by Admin A. Are magnetised by eddy currents only B. Are non-magnetic and can not be magnetised C. Are magnetised in direction opposite to the magnetic field D. Can be magnetised in one direction only ✅ The correct answer is option C.
__________ number determines whether the fluid flow in an open channel is supercritical, critical or sub-critical. September 6, 2025 by Admin A. Mach B. Reynolds C. Froude D. Weber ✅ The correct answer is option C.