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In first gear, or low gear, an automobile's engine runs about three times as fast as the drive shaft. In second gear, the engine does not have to run as fast; usually it runs about 1.6 times faster than the drive shaft. Finally, in third, or high gear, the engine runs at the same speed as the drive shaft.


Engine speed = 3,500 r.p.m.

Transmission in first gear


Drive-shaft speed (to nearest r.p.m.) =.

A.1,167B.2,188C.5,600D.10,500

Verified Answer :

1167 r.p.m approximatley

TaeKwonDoIsDead

Given:

  • Engine speed = 3,500 r.p.m.
  • Transmission in first gear

They want to know drive shaft speed when transmission is in 1st gear. It is given in the problem that in first gear,

engine speed = 3 times as drive shaft

Let's solve this by putting 3500 in engine speed. We have,

3500 = 3 * drive shaft speed

drive shaft speed = \(\frac{3500}{3}=1166.67\). Rounding to nearest number is 1167 (rpm). Answer choice A is the right one.


ANSWER: A


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