Isochronism in a governor is desirable when

A the engine operates at low speeds
B the engine operates at high speeds
C the engine operates at variable speeds
D one speed is desired under one load

Correct Answer: one speed is desired under one load

The isochronous governor is not of practical use because the sleeve will move to one of its extreme positions immediately the speed deviates from the isochronous speed.
Bissoy MCQ
#Machine Dynamics #Governors

Related Questions

When the sleeve of a Porter governor moves upwards, the governor speed
A increases
B decreases
C remains unaffected
D none of the mentioned
For two governors A and B, the lift of sleeve of governor A is more than that of governor B, for a given fractional change in speed. It indicates that
A governor A is more sensitive than governor B
B governor B is more sensitive than governor A
C both governors A and B are equally sensitive
D none of the mentioned
In a Hartnell governor, if a spring of greater stiffness is used, then the governor will be
A more sensitive
B less sensitive
C isochronous
D none of the mentioned
When the sleeve of a Porter governor moves downwards, the governor speed
A increases
B decreases
C remains unaffected
D first increases and then decreases
If the controlling force line for a spring controlled governor when produced intersects the Y-axis at the origin, then the governor is said to be
A stable
B unstable
C isochronous
D none of the mentioned
A Hartnell governor has its controlling force (Fc) given by Fc = ar + b, where r is the radius of rotation and a and b are constants. The governor becomes isochronous when
A a is +ve and b = 0
B a = 0 and b is +ve
C a is +ve and b is -ve
D a is +ve and b is also +ve
In a spring controlled governor, when the controlling force ________ as the radius of rotation increases, it is said to be a stable governor.
A Remains constant
B Decreases
C Increases
D None of these
Before the appointment of Shri Kalyan Singh as the governor of Rajasthan who among the following was the acting governor of the state?
A Ram Naresh Yadav
B Margaret Alva
C O. P. Kohli
D Ram Naik
Which of the Act made the governor of Bengal as Governor General of India?
A Pitt's India Act, 1784
B Charter Act, 1813
C Charter Act, 1833
D Regulating Act, 1773
The ratio of height of Porter governor (when length of arms and links are equal) to the height of Watt's governor is (where m = Mass of the ball and M = Mass on the sleeve)
A $$\frac{{\text{m}}}{{{\text{m}} + {\text{M}}}}$$
B $$\frac{{\text{M}}}{{{\text{m}} + {\text{M}}}}$$
C $$\frac{{{\text{m}} + {\text{M}}}}{{\text{m}}}$$
D $$\frac{{{\text{m}} + {\text{M}}}}{{\text{M}}}$$

Next steps