Machine Dynamics

Types of Governors

Question 1
Marks : +2 | -2
Pass Ratio : 100%
A Hartnell governor is a
dead weight governor
pendulum type governor
spring loaded governor
inertia governor
Explanation:
A Hartnell governor is a spring loaded governor.
Question 2
Marks : +2 | -2
Pass Ratio : 100%
A Watt’s governor can work satisfactorily at speeds from
60 to 80 r.p.m
80 to 100 r.p.m
100 to 200 r.p.m
200 to 300 r.p.m
Explanation:
A watt’s governor may only work satisfactorily at low speeds i.e. from 60 to 80 r.p.m.
Question 3
Marks : +2 | -2
Pass Ratio : 100%
The height of a Watt’s governor is
directly proportional to speed
directly proportional to (speed)
inversely proportional to speed
inversely proportional to (speed)
Explanation:
If N is the speed of the arm and ball about the spindle axis, then the height of the governor (h) is given by
Question 4
Marks : +2 | -2
Pass Ratio : 100%
The ratio of height of Porter governor to the height of Watt’s governor is
m/m + M
M/ m + M
m + M/m
m + M/M
Explanation:
The ratio of height of a Porter governor (when length of arms and links are equal) to the height of Watt’s governor is m + M/n, where m and M re the masses of the ball and sleeve respectively.
Question 5
Marks : +2 | -2
Pass Ratio : 100%
In a Porter governor, the balls are attached to the extension of lower links.
True
False
Explanation:
Porter governor is a modification of Watt’s governor, with a central load attached to the sleeve.
Question 6
Marks : +2 | -2
Pass Ratio : 100%
Which of the following is a pendulum type governor?
Watt’s governor
Porter governor
Hartnell governor
None of the mentioned
Explanation:
Watt’s governor is a pendulum type governor.
Question 7
Marks : +2 | -2
Pass Ratio : 100%
A Watt’s governor is a spring loaded governor.
True
False
Explanation:
A Hartnell governor is a spring loaded governor.
Question 8
Marks : +2 | -2
Pass Ratio : 100%
The height of a Watt’s governor is equal to
8.95/N2
89.5/N2
895/N2
8950/N2
Explanation:
If N is the speed of the arm and ball about the spindle axis, then the height of the governor (h) is given by
Question 9
Marks : +2 | -2
Pass Ratio : 100%
When the sleeve of a Porter governor moves downwards, the governor speed
increases
decreases
remains unaffected
first increases and then decreases
Explanation:
When the sleeve of a porter governor moves upwards, the governor speed increases and when the sleeve moves downwards, the governor speed decreases.
Question 10
Marks : +2 | -2
Pass Ratio : 100%
When the sleeve of a porter governor moves upwards, the governor speed
increases
decreases
remains unaffected
first increases and then decreases
Explanation:
When the sleeve of a porter governor moves upwards, the governor speed increases and when the sleeve moves downwards, the governor speed decreases.