567. The unit of gc is
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.
570. An engineer’s hammer is made of high __________ steel.
A. Carbon
B. Speed
C. Silicon
D. Chromium
✅ The correct answer is option A.
573. 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.)
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.
536. In inventory control theory, the economic order quantity (EOQ) is the
A. Lot size corresponding to break even analysis
B. Average level of inventory
C. Optimum lot size
D. None of these
✅ The correct answer is option C.
538. A colloidal system, in which a liquid is dispersed in gas is called a/an
A. Gel
B. Aerosol
C. Foam
D. Emulsion
✅ The correct answer is option B.
540. Pick out the correct statement about the condensation.
A. Filmwise condensation gives a lower heat transfer rate than the dropwise condensation
B. Suitable coating or vapour additive is used to promote film wise condensation
C. If a condensing liquid does not wet the surface dropwise, even then condensation will take place on it
D. Reynolds number of condensing liquid is based on its mass flow rate
✅ The correct answer is option B.
542. Projection welding & stud welding is categorised as the __________ welding.
A. Pressure
B. Thermit
C. Resistance
D. Arc
✅ The correct answer is option C.
544. The phenomenon occurring during explosion of a hydrogen bomb is
A. Nuclear fission
B. Nuclear fusion
C. A combination of both nuclear fission & fusion
D. None of these
✅ The correct answer is option C.
546. Break even point represents the condition, when the company runs under no profit no loss condition. In break even analysis, total cost comprises of fixed cost
A. Only
B. Plus variable cost
C. Plus overhead cost
D. Plus selling expenses
✅ The correct answer is option B.
548. The radioactive isotope of hydrogen is
A. Deuterium
B. Tritium
C. Protium
D. None of these
✅ The correct answer is option B.