If an engine operates at 900 RPM at no load,...

Question 1 / 205eccefa1bacbc34ba4d47700

Question 1 of 205eccefa1bacbc34ba4d47700

If an engine operates at 900 RPM at no load, and at 870 RPM at full load, the speed droop is __________.

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Question 1 of 20

5eccefa1bacbc34ba4d47700

If an engine operates at 900 RPM at no load, and at 870 RPM at full load, the speed droop is __________.

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🔍 Key Concepts

• How speed droop is defined for engine governors (difference between no-load and full-load speed) • Whether droop is calculated using no-load speed or full-load/rated speed in the denominator • Interpreting the multiple-choice options as decimal ratios (not percentages)

💭 Think About

• First, find the difference in RPM between no-load and full-load speeds. • Then, think about which speed (no-load or full-load) is normally used as the reference speed when calculating droop. • Convert your fraction to a decimal, and compare it to the choices to see which is closest.

✅ Before You Answer

• Be sure you correctly compute the RPM difference: no-load RPM − full-load RPM. • Double-check which reference speed you’re dividing by: ask yourself which represents the engine’s rated/working condition. • After you divide, verify that your decimal value is close to one and only one of the answer choices before selecting.

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Question 1 of 20

If an engine operates at 900 RPM at no load, and at 870 RPM at full load, the speed droop is __________.

0.031

0.034

0.037

0.04

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