In order to test the efficiency of reducer gear train 1

In order to test the efficiency of reducer gear train 1 kW input was given at the input end at a speed of 1440 rpm and at the output end the measured torque was 56.36 Nm. If the ratio of speed reduction in this unit is 10: 1, the efficiency is about

Speed reduction = 10: 1

Output speed =	1440	= 144 rpm
	10

Output Torque = T.ω = 56.36 ×	2π × 144	= 849.88 N - m
	60

% efficiency =	Output	× 100
	Input

=	849.88	× 100 = 85 %(Approximately)
	1000