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 $$\frac{{{\text{m}} + {\text{M}}}}{{\text{M}}}$$

Correct Answer: $$\frac{{{\text{m}} + {\text{M}}}}{{\text{m}}}$$

Bissoy MCQ
#Mechanical Engineering #Theory of Machine

Related Questions

The effort of a Porter governor is equal to (where c = Percentage increase in speed, m = Mass of ball and M = Mass on the sleeve)
A $${\text{c}}\left( {{\text{m}} - {\text{M}}} \right){\text{g}}$$
B $${\text{c}}\left( {{\text{m}} + {\text{M}}} \right){\text{g}}$$
C $$\frac{{\text{c}}}{{\left( {{\text{m}} + {\text{M}}} \right){\text{g}}}}$$
D $$\frac{{\text{c}}}{{\left( {{\text{m}} - {\text{M}}} \right){\text{g}}}}$$
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A increases
B decreases
C remains unaffected
D none of the mentioned
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A increases
B decreases
C remains unaffected
D first increases and then decreases
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A d + 17 mm
B 2d + 13 mm
C 2d + 20 mm
D 3.5 d
In designing a sleeve coupling, outer diameter of the sleeve is taken as (where d = Diameter of the shaft)
A d + 17 mm
B 2d + 13 mm
C 2d + 20 mm
D 3.5d
A sport goods store ordered an equal number of white and yellow tennis balls. The tennis ball company delivered 30 extra tennis ball, making the ratio of white balls to yellow balls 6:5, How many tennis ball did the sport goods store originally order?
A 150
B 180
C 300
D 330
For achieving maximum capacity of the ball mill, the ball charge should be equal to about __________ percent of the ball mill volume.
A 10
B 25
C 50
D 75
If the opposite links of a four bar linkage are equal, the links will always form a
A Triangle
B Rectangle
C Parallelogram
D Pentagon
The power of a Porter governor is equal to
A c2/1 + 2c (m + M)gh
B 2c2/1 + 2c (m + M)gh
C 3c2/1 + 2c (m + M)gh
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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

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