Q: 48 (SCRA/2010)

In a western differential pulley block, the 9 number of recesses in the smaller wheel is — of 10 that of larger wheel. If the load lifted by an effort of 300 N is 3 kN, the efficiency of the machine will be
question_subject: 
Science
question_year: 
2010
question_exam: 
SCRA
stats: 
0,32,8,8,32,0,0