The unit of gc is September 6, 2025 by Admin A. lbm/lbf . ft/seC₂ B. lbf/lbm . ft/seC₂ C. lbm/lbf . seC₂/ft D. lbf/lbm . seC₂/ft ✅ The correct answer is option A.
Laser is a device to produce September 6, 2025 by Admin A. Gamma rays B. Microwaves C. A beam of white light D. A beam of coherent light ✅ The correct answer is option D.
Property of a material to resist a tensile force without giving away is a measure of its September 6, 2025 by Admin A. Stiffness B. Toughness C. Resilience D. Tenacity ✅ The correct answer is option D.
An engineer’s hammer is made of high __________ steel. September 6, 2025 by Admin A. Carbon B. Speed C. Silicon D. Chromium ✅ The correct answer is option A.
Calorific value of __________ are almost same. September 6, 2025 by Admin A. Lignite & anthracite coal B. Lignite & coal gas C. Petrol & diesel D. Coal gas & natural gas ✅ The correct answer is option C.
Out of the following, __________ waves have the largest wavelength. September 6, 2025 by Admin A. Radio B. Light C. X-ray D. Gamma-ray ✅ The correct answer is option A.
In troposphere (the weather domain), the temperature ‘t’ at height ‘h’ above the sea level in metres is given by (where, temperature at sea level is 15°C and t is in °C.) September 6, 2025 by Admin A. T = 15 – 0.0065 h B. T = 15 + 0.0065 h C. T = 0.0035 h – 15 D. T = 15 – 0.0035 h ✅ The correct answer is option A.
With increase in __________ Knocking tendency in a spark ignition petrol engine decreases. September 6, 2025 by Admin A. Supercharging B. Wall temperature C. Compression ratio D. Engine speed ✅ The correct answer is option D.
Which of the following metals can be extracted from its ore by both pyrometallur-gical as well as hydrometallurgical methods ? September 6, 2025 by Admin A. Copper B. Zinc C. Both A & B D. Neither A nor B ✅ The correct answer is option C.
Fire on fuel oil lines can be extinguished by September 6, 2025 by Admin A. Foam B. Steam C. Water D. Carbon dioxide ✅ The correct answer is option A.