111. Yield strength of a material is determined by the __________ test.
A. Creep
B. Tension
C. Compression
D. Endurance
✅ The correct answer is option B.
41. Feed check valve is used in steam boilers to
A. Check the water level in the boiler
B. Check the feed water flow rate
C. Feed high pressure water to boiler and guard against its backflow through it
D. None of these
✅ The correct answer is option C.
44. Thermal equivalent of electrical power in practical calculation is __________ kcal/kWh.
A. 746
B. 3000
C. 1000
D. 550
✅ The correct answer is option B.
47. The usual energy consumption in electric arc furnace steel making is __________ KWh/ton of steel.
A. 60 – 100
B. 400 – 700
C. 1200 -1500
D. 2000 – 2300
✅ The correct answer is option B.
50. Pick out the wrong conversion of absolute & kinematic viscosities.
A. 1 stoke = 1 cm²/sec
B. 1 N.sec/m² = 10 paise
C. 1 stoke = 1 m²/sec
D. 1 m²/sec = 10⁴ stokes
✅ The correct answer is option C.
53. The refrigerant freon-12 is chemically
A. CCl₂F₂
B. CCl₃F
C. CClF₃
D. CCl₄F
✅ The correct answer is option A.
56. Thermistors are used in __________ devices.
A. Voltage measuring
B. Temperature measuring
C. Temperature compensating
D. Both B & C
✅ The correct answer is option D.
59. Hot working of lead is carried out at
A. 75°C
B. 373°K
C. 150°C
D. Room temperature
✅ The correct answer is option B.
61. The most important function of a washer is to provide bearing area and washers are normally specified by their hole diameters. The diameter of washer as compared to the nut is
A. More
B. Less
C. Same
D. More but less than the diameter of bolt
✅ The correct answer is option A.
63. Work done by a/an __________ process is determined by ∫p.dV.
A. Adiabatic
B. Quasi-static
C. Isothermal
D. Isentropic
✅ The correct answer is option B.