A factory floor contains four different machines whose power data are listed below:…
PHYSICS · Subjective · CBSE · Physics · Work, Energy and Power · Work, Energy and Power
Problem
A factory floor contains four different machines whose power data are listed below:
Machine A: 90 hp
Machine B: 60 kW
Machine C: Performs 8.0×10^5 J of work in 12 s
Machine D: Operates at 1.2 MW
Assuming 1 hp = 746 W,
(i) Convert the power of each machine to kilowatt.
(ii) Rank the machines from the least powerful to the most powerful.
(iii) The factory management wants to connect any two machines to a supply line rated for 1.5 MW without overloading it. List all possible pairs that satisfy this condition and justify your choice with appropriate calculations.