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A scooter has the following specifications- 110 kg Kerb weight Rider weight 70 kg Front Tire 90/90-12 Rear Tire 90/90-12 Coefficient of Rolling Resistance 0.01 Total Reduction (From motor to wheel) Maximum motor output power 5 kW Assuming g=9.8 m/s^2 A. Find the motor speed (in rpm) for a maximum scooter speed of 80 kmph B. Find the minimum motor output torque to achieve 0 to 40 kmph in 3 sec. You can ignore aerodynamic resistance. Assume that the motor torque and power graph is as follows. T P,T Constant Power region (Fix-weakening region) Constnt to que region @hase Speed max Note : Assumptions are allowed as far as they don't conflict with the data given

A scooter has the following specifications- 110 kg Kerb weight Rider weight 70 kg Front Tire 90/90-12 Rear Tire 90/90-12 Coefficient of Rolling Resistance 0.01 Total Reduction (From motor to wheel) Maximum motor output power 5 kW Assuming g=9.8 m/s^2 A. Find the motor speed (in rpm) for a maximum scooter speed of 80 kmph B. Find the minimum motor output torque to achieve 0 to 40 kmph in 3 sec. You can ignore aerodynamic resistance. Assume that the motor torque and power graph is as follows. T P,T Constant Power region (Fix-weakening region) Constnt to que region @hase Speed max Note : Assumptions are allowed as far as they don't conflict with the data given

Elements Of Electromagnetics
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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solve a and b given in the image provided.

A scooter has the following specifications- Kerb weight Rider weight 110 kg 70 kg %3D Front Tire 90/90-12 %3D Rear Tire 90/90-12 %3D Coefficient of Rolling Resistance 0.01 %3D Total Reduction (From motor to wheel) 9. %3D Maximum motor output power 5 kW %3D Assuming g=9.8 m/s^2 A. Find the motor speed (in rpm) for a maximum scooter speed of 80 kmph B. Find the minimum motor output torque to achieve 0 to 40 kmph in 3 sec. You can ignore aerodynamic resistance. Assume that the motor torque and power graph is as follows. T. P,T Constant Power region (Flox-weakening region) Constant to que region Speed max base Note : Assumptions are allowed as far as they don't conflict with the data given
Transcribed Image Text:A scooter has the following specifications- Kerb weight Rider weight 110 kg 70 kg %3D Front Tire 90/90-12 %3D Rear Tire 90/90-12 %3D Coefficient of Rolling Resistance 0.01 %3D Total Reduction (From motor to wheel) 9. %3D Maximum motor output power 5 kW %3D Assuming g=9.8 m/s^2 A. Find the motor speed (in rpm) for a maximum scooter speed of 80 kmph B. Find the minimum motor output torque to achieve 0 to 40 kmph in 3 sec. You can ignore aerodynamic resistance. Assume that the motor torque and power graph is as follows. T. P,T Constant Power region (Flox-weakening region) Constant to que region Speed max base Note : Assumptions are allowed as far as they don't conflict with the data given
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