Use the wheel and axle diagram,given to the right, to answer questions 8, 9 and 10. 8. The AMA of the wheel and axle is: (a) 57 (b) 0.018 (c) 1.9 (d) 0.52 Fe= V61N F, = 118N 9. If the radius of the axle is 1.2 cm, and the radius of the wheel is 3.1 cm, then the efficiency is: (a) 20 % (b) 75 % (c) 100 % (d) 133 % 10. If the friction of the wheel and axle is decreased by oiling the axle, then which of the following will be true? (b) Fɛ will decrease and % efficiency will decrease. (d) Fɛ will decrease and % efficiency will increase. (a) FE will increase and % efficiency will increase. (c) FĘ will increase and % efficiency will decrease.
Use the wheel and axle diagram,given to the right, to answer questions 8, 9 and 10. 8. The AMA of the wheel and axle is: (a) 57 (b) 0.018 (c) 1.9 (d) 0.52 Fe= V61N F, = 118N 9. If the radius of the axle is 1.2 cm, and the radius of the wheel is 3.1 cm, then the efficiency is: (a) 20 % (b) 75 % (c) 100 % (d) 133 % 10. If the friction of the wheel and axle is decreased by oiling the axle, then which of the following will be true? (b) Fɛ will decrease and % efficiency will decrease. (d) Fɛ will decrease and % efficiency will increase. (a) FE will increase and % efficiency will increase. (c) FĘ will increase and % efficiency will decrease.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:Use the wheel and
axle diagram,given to the right, to answer questions 8, 9 and 10.
8.
The AMA of the wheel and axle is:
(a) 57
(b) 0.018 (с) 1.9 (d) 0.52
FE=
V61N
F=
118N
9. If the radius of the axle is 1.2 cm, and the radius of the wheel is 3.1 cm,
(b) 75 %
then the efficiency is:
(d) 133 %
(a) 20 %
(c) 100 %
10. If the friction of the wheel and axle is decreased by oiling the axle, then which of the following will be true?
(a) FE will increase and % efficiency will increase.
(c) FF will increase and % efficiency will decrease.
(b) FĘ will decrease and % efficiency will decrease.
(d) FF will decrease and % efficiency will increase.
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