Which of the speeds listed represents the...

Question 1 / 2707066636eee28f7522a1c51f355

Question 1 of 2707066636eee28f7522a1c51f355

Which of the speeds listed represents the synchronous speed rating of the lube oil pump motor shown in the illustration? Illustration GS-0011

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Question 1 of 27070

Which of the speeds listed represents the synchronous speed rating of the lube oil pump motor shown in the illustration? Illustration GS-0011

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🔍 Key Concepts

• Difference between motor synchronous speed and pump operating speed • Where the illustration lists Speed R.P.M. (SYN.) versus the pump Speed R.P.M. • How synchronous speed on an AC motor nameplate relates to a 60 Hz, 3‑phase supply

💭 Think About

• On the illustration, which table refers specifically to the motor rather than the pump? • In that motor table, what exact wording is used next to the speed value, and how does that relate to the word synchronous in the question? • Why is the pump speed slightly different from the motor’s synchronous speed on many AC motor‑driven pumps?

✅ Before You Answer

• Be sure you are reading the Motor Characteristics section, not the Pump Characteristics section. • Locate the line that includes Speed R.P.M. (SYN.) and match that number to one of the choices. • Verify that you are not choosing the 1150 RPM pump speed, which is the actual running speed, not the synchronous rating.

Question 1 of 27070

Which of the speeds listed represents the synchronous speed rating of the lube oil pump motor shown in the illustration? Illustration GS-0011

1,000 RPM

1,150 RPM

1,200 RPM

1,250 RPM