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ME 424 B Quiz 1

This document contains a quiz with 3 multi-part engineering mechanics problems related to gear design and analysis. Problem 1 involves calculating various gear dimensions for a given gear. Problem 2 involves determining gear dimensions and relationships for two interacting gears. Problem 3 involves determining load and geometry values for a parallel helical gear set transmitting power. The student is prompted to show their work and solutions for each part of each problem.

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Elisif DeFair
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55 views2 pages

ME 424 B Quiz 1

This document contains a quiz with 3 multi-part engineering mechanics problems related to gear design and analysis. Problem 1 involves calculating various gear dimensions for a given gear. Problem 2 involves determining gear dimensions and relationships for two interacting gears. Problem 3 involves determining load and geometry values for a parallel helical gear set transmitting power. The student is prompted to show their work and solutions for each part of each problem.

Uploaded by

Elisif DeFair
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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ME 424 B (QUIZ # 1)

Feb. 26, 2021

NAME: _________________________________________ SCORE; __________________

DIRECTION: Show your solutions


PROBLEMS:

1. Given a gear of 24-tooth, 4- pitch, the clearance is to be one-eight of the addendum, and the backlash
to 2% of the circular pitch. Calculate the following to three decimal places:
A. The pitch diameter
B. The addendum diameter
C. The dedendum diameter
D. The backlash
E. The space width
F. The tooth thickness
1. The two gears have 20 and 30 teeth. The distance between centers of the shaft is 20 inches. The
addendum equals the module and the clearance is 0.16 times the module. There is no backlash. Find the
following:
A. Pitch diameters
B. Addendum and dedendum
C. Root circles diameter
D. Tooth thickness
2. A spur pinion rotates at 2000 rpm and transmits to mating gear 20 kW. The pitch diameter is 6 inches
and the pressure angle is 20 degrees . determine
A. The tangential load, kN
B. The radial load, kg
C. The total load, lbs.

3. A parallel helical gear-set consists of a 15-tooth pinion driving a 50-tooth gear. The pinion has a left-
hand helix of 20o, a normal pressure angle of 14 ½ deg and a normal diametral pitch of 8 tooth/inch. If the
pinion is to transmit 40 Hp at a speed of 1500 rpm, determine the following
A. Pitch diameters
B. Center distance of the two gears.
C. Tangential load, kN
D. Radial load, kN
E. Total load, kN

SUMMARY of ANSWERS:
1. A. ________________
B. _______________
C. _______________
D. _______________
E. _______________
F. _______________
2. A. ________________
B. ______________
C. ______________
D. _____________

3. A. ____________
B. ___________
C. ___________
4. A. ________
B. _______
C. _______
C. _____
---------------------------------------------------------------NOTHING
FOLLOWS-------------------------------------------------------
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