Question

Use: g = 10m/s2, 746 W = 1 hp, 1 hp = 550 ft lbf/sec, 16 oz-1 lbf, 1 lb-ft/sec = 1.36W

Law of sines: a/sin(ɑ) = b/sin(β)

Law of cosines: c2 = a2 + b2 -2*a*b*cos(ɣ)

Question 12 1 pts According to the graph below, what is the usual nominal speed in rpms? DC Motor Performance [136-402] 18000 16000 14000 12000 10000 Speed -Current -Power (Out) -Efficiency 70 50 40 30 150000 6000 4000 2000 100000 20000 50000 10000 Torque (mNm)

Answer 1