The torque exerted on the crank shaft of a two stroke engine is given by the equation: T(N-m) = 14 500 + 2300 sin 20 – 1900 cos 20 OS where 0 is the crank angle displacement from the inner dead centre. Assuming the resisting torque to be constant, determine: 1. The power of the engine when the speed is 150 r.p.m. ; 2. The moment of inertia of the flywheel if the speed variation is not to exceed ± 0.5% of the mean speed; and 3. The angular acceleration of the flywheel when the crank has turned through 30° from the inner dead [Ans. 228 kW; 1208 kg-m²; 0.86 rad/s²] centre.
The torque exerted on the crank shaft of a two stroke engine is given by the equation: T(N-m) = 14 500 + 2300 sin 20 – 1900 cos 20 OS where 0 is the crank angle displacement from the inner dead centre. Assuming the resisting torque to be constant, determine: 1. The power of the engine when the speed is 150 r.p.m. ; 2. The moment of inertia of the flywheel if the speed variation is not to exceed ± 0.5% of the mean speed; and 3. The angular acceleration of the flywheel when the crank has turned through 30° from the inner dead [Ans. 228 kW; 1208 kg-m²; 0.86 rad/s²] centre.
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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![8.
The torque exerted on the crank shaft of a two stroke engine is given by the equation:
T(N-m)=
= 14 500 + 2300 sin 20 – 1900 cos 20
where 0 is the crank angle displacement from the inner dead centre. Assuming the resisting torque to
be constant, determine: 1. The power of the engine when the speed is 150 r.p.m. ; 2. The moment of
inertia of the flywheel if the speed variation is not to exceed ± 0.5% of the mean speed; and 3. The
angular acceleration of the flywheel when the crank has turned through 30° from the inner dead
[Ans. 228 kW; 1208 kg-m²; 0.86 rad/s²]
centre.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F707b3767-226e-4666-8566-4ef21f017346%2Faa35f2c4-1a39-4023-83da-c8bbf569abd4%2Fmqzhfg_processed.jpeg&w=3840&q=75)
Transcribed Image Text:8.
The torque exerted on the crank shaft of a two stroke engine is given by the equation:
T(N-m)=
= 14 500 + 2300 sin 20 – 1900 cos 20
where 0 is the crank angle displacement from the inner dead centre. Assuming the resisting torque to
be constant, determine: 1. The power of the engine when the speed is 150 r.p.m. ; 2. The moment of
inertia of the flywheel if the speed variation is not to exceed ± 0.5% of the mean speed; and 3. The
angular acceleration of the flywheel when the crank has turned through 30° from the inner dead
[Ans. 228 kW; 1208 kg-m²; 0.86 rad/s²]
centre.
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