Bundle: Understanding Motor Controls, 4th + Mindtap Electrical, 2 Terms (12 Months) Printed Access Card
4th Edition
ISBN: 9780357097755
Author: Stephen L. Herman
Publisher: Cengage Learning
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Textbook Question
Chapter 43, Problem 8RQ
Refer to Figure 43–6 and assume the motor is to rotate in the opposite direction. How can the belt slack be maintained on top?
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Q. No 1.
Derive the expressions for A, B, & C in the given figure with the help of clear
drawing and stepwise procedure. Also find the expression for the Length of the belt drives
for open and closed belt drives.
B=?.
sin D+d
2C
A=?
sin D+d
2C
VAC - (D+ dỷ
An Electrical motor (heavy start) that delivers 53,57 kW at 1440 r/min must be connected to a
rotary compressor with a wedge belt drive. The compressor must operate 24 hours per day with
a shaft speed of approximately 966 r/min. The center distance must be closest to 1000 mm.
For the belt drive shown below calculate the contact angle 0, if:
D = 100 mm;
d = 30 mm;
C = 300 mm.
Chapter 43 Solutions
Bundle: Understanding Motor Controls, 4th + Mindtap Electrical, 2 Terms (12 Months) Printed Access Card
Ch. 43 - What are the disadvantages of low-speed, directly...Ch. 43 - Prob. 2RQCh. 43 - What three alignment checks should be made to...Ch. 43 - Prob. 4RQCh. 43 - Induction motors should not be used below a...Ch. 43 - What is the primary reason for using a pulley...Ch. 43 - How tightly should V-belts be adjusted?Ch. 43 - Refer to Figure 436 and assume the motor is to...Ch. 43 - A machine delivered for installation has a 2-inch...
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- a 7460 w split-phase motor running at 1750 rpm is used to drive a rotary pump. the pump should run continuously at approximately 1175 rpm. the center distance should not exceed 1118 mm. space limits the diameter of the driven pulley to 292 mm. design a. the pulley diameters, b. the belt size, and c. the number of belt required.arrow_forwardAn industrial fan running at 600 rpm is driven by a 25 kW, 960 rpm, induction motor. The pulley mounted on the motor shaft is 270 mm. Center to center distance is 1.45 m and use f = 0.35. Determine the length of leather beltarrow_forwardTO THE NEXT PROBLEM Design a complete belt drive system for an AC motor (NT) running a fan 12 hrs/day, with an input power 10 hp and input speed of 1000 RPM. The desired output RPM and center distances are 500 RPM and 36 inch, respectivelyarrow_forward
- Derive the expressions for A, B, & C in the given figure with the help of clear drawing and stepwise procedure. Also find the expression for the Length of the belt drives for open and closed belt drives.arrow_forwardA 7460 W split-phase motor running at 1750 rpm is used to drive a rotary pump. The pump should run continuously at approximately 1175 rpm. The center distance should not exceed 1118 mm. Space limits the diameter of the driven pulley to 292 mm. Determine: a. the pulley diameters, b. the belt size, and c. the number of belt required.arrow_forwardQ5: What kinds of Belt drives with explanation only. onearrow_forward
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