1.

1000 kW of power is supplied to a motor. 90% of this is transmitted to a machine operating at 80% efficiency. The machine lifts an object of 10-tons with a velocity _____ m/s. (Assume g = 10m/s2)

A. 2
B. 4
C. 6
D. 8
Answer» D. 8


Discussion

No Comment Found