Power Engineering 3A1 ch
5 questions with complete solutions graded
A+ passed
1 /
6
1. From what height must a mass of 2 kg fall to have e
the same amount of kinetic energy as a bullet of 25
g traveling at the speed of 1000 m/s.
Select one:
A. 50 m
B. 98.1 m
C. 243.7 m
D. 543.39 m
E. 637.1 m
2. The work required to move a mass of 20 kg up a d
vertical distance of 10 m in one minute is:
Select one:
A. 9.81 J
B. 32.7 J
C. 32.7 kJ
D. 1962 J
E. 115.72 kJ
3. A steam turbine has an output of 40 MJ/s. Its power c
output, in kW is:
Select one:
A. 11.11 kW
B. 4,000 KW
C. 40,000 kW
D. 24,000 kW
E. 240,000 kW
4. A train travels at various speeds between several sta-
c tions. From the train schedule the following informa-
tion can be extracted about the different segments of
the journey: 8 km traveled in 10 min., 14 km in 12 min.,
16 km in 18 min., 12 km in 10 min. The average speed
during the whole trip is:
Select one:
A. 13.89 km/h
B. 50.0 km/h
C. 60.0 km/h
