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At an engine throttle position of 75% the high idle speed of engine is shifted by 200 rpm towards maximum torque position. If the engine is maintaining a uniform speed of 2475 rps at given load, governor regulation is _____

(a) 9.76%

(b) 7.77%

(c) 12.67%

(d) 1.89%

I had been asked this question during an interview for a job.

Enquiry is from Principles of Governor in section Governor of Farm Machinery

1 Answer

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Best answer
Right option is (b) 7.77%

Best explanation: At given load

Nmin  = 2475 rpm

Above maximum torque position

Nmax  = 2475 + 200 = 2675 rpm

Governor regulation = \(\frac{[2(275-2475)]}{2675+2475}\) = 7.77%

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