Mechanical Engineering - Theory of machines - Discussion
Discussion Forum : Theory of machines - Section 1 (Q.No. 8)
8.
When the relation between the controlling force (Fc) and radius of rotation (r) for a spring controlled governor is Fc = ar + b, then the governor will be
Discussion:
10 comments Page 1 of 1.
Arjun said:
1 decade ago
For governor to be stable when slope of controlling force curve must be greater than that of speed curve. When controlling force curve coincide with speed curve create the case of isochronous.
(1)
Manoj prasad said:
1 decade ago
For stable Fc = ar - b.
For isochronous Fc = ar.
For isochronous Fc = ar.
Rajnikant Seth said:
8 years ago
For stable, Fc = ar-b.
For unstable,Fc = ar+b.
For isochronous, Fc = ar.
For unstable,Fc = ar+b.
For isochronous, Fc = ar.
HAILEMARIAM mulugeta said:
8 years ago
For stable, Fc = ar-b.
For unstable,Fc = ar+b.
For isochronous, Fc = ar.
For unstable,Fc = ar+b.
For isochronous, Fc = ar.
(1)
Uday said:
8 years ago
Thank you so much @Mulugeta.
(2)
Sandeep Suman said:
8 years ago
Yes right.
For stable, Fc = ar-b.
For unstable,Fc = ar+b.
For isochronous, Fc = ar.
For stable, Fc = ar-b.
For unstable,Fc = ar+b.
For isochronous, Fc = ar.
(3)
Nandu said:
7 years ago
For stable, Fc = ar-b.
For unstable, Fc = ar+b.
For isochronous, Fc = ar.
For unstable, Fc = ar+b.
For isochronous, Fc = ar.
(3)
Anish pandey said:
7 years ago
What is a and b in formula?
(1)
Anchal said:
7 years ago
From.
y=mx+c.
Where y=Fc,
m=a,
x= r,
c=b.
That's distance c in -y-axis then Fc=ar-b for stable governor.
If c in +y axis then Fc=ar+b for unstable governor.
c =0 ( from origin) Fc=ar for isochronous governor.
y=mx+c.
Where y=Fc,
m=a,
x= r,
c=b.
That's distance c in -y-axis then Fc=ar-b for stable governor.
If c in +y axis then Fc=ar+b for unstable governor.
c =0 ( from origin) Fc=ar for isochronous governor.
(5)
Satyam singh said:
6 years ago
No, it is not said in the question about the sign of a and b.
May be negative or b=0 or negative constant.
May be negative or b=0 or negative constant.
(1)
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