Power Engineer 3A1 questions n
answers rated A+
Trapezium - correct answer ✔✔four sided figure no two sides are parallel
Area of segment - correct answer ✔✔A = 4/3 * D*h*sqrt((d/h)-0.608)
Heat rate - correct answer ✔✔The rate at which boiler supplies heat for the production of steam in
boiler. The total amount of heat absorbed by water/steam in given period
equivalent evaporation - correct answer ✔✔= heat rate (kJ/h) / 2257 (kJ/kg)
Perfect Gas equation - correct answer ✔✔PV=mRT; R=8.314 (kJ/kgmol) / mol
Covalent bonding - correct answer ✔✔electronegativity difference between two elements less than 1.7
Brinell Hardness force - correct answer ✔✔soft metal: 500kg
Aluminum casting: 1500kg
Iron and steel: 3000kg
BHN ball diameter - correct answer ✔✔1, 2, 5, 10 mm, 10 to 20 seconds
BHN No. - correct answer ✔✔=2P/(πD(D- sqrt(D8D-d*d))
Rockwell Hardness test - correct answer ✔✔use depth of indentation
first minor load
second major load
answers rated A+
Trapezium - correct answer ✔✔four sided figure no two sides are parallel
Area of segment - correct answer ✔✔A = 4/3 * D*h*sqrt((d/h)-0.608)
Heat rate - correct answer ✔✔The rate at which boiler supplies heat for the production of steam in
boiler. The total amount of heat absorbed by water/steam in given period
equivalent evaporation - correct answer ✔✔= heat rate (kJ/h) / 2257 (kJ/kg)
Perfect Gas equation - correct answer ✔✔PV=mRT; R=8.314 (kJ/kgmol) / mol
Covalent bonding - correct answer ✔✔electronegativity difference between two elements less than 1.7
Brinell Hardness force - correct answer ✔✔soft metal: 500kg
Aluminum casting: 1500kg
Iron and steel: 3000kg
BHN ball diameter - correct answer ✔✔1, 2, 5, 10 mm, 10 to 20 seconds
BHN No. - correct answer ✔✔=2P/(πD(D- sqrt(D8D-d*d))
Rockwell Hardness test - correct answer ✔✔use depth of indentation
first minor load
second major load
