A six-pole three-phase squirrel-cage...

Question 1 / 205eccefa4bacbc34ba4d48220

Question 1 of 205eccefa4bacbc34ba4d48220

A six-pole three-phase squirrel-cage induction motor operating at 60 Hz is running at 1155 rpm. What is the percentage slip in this case?

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Question 1 of 20

5eccefa4bacbc34ba4d48220

A six-pole three-phase squirrel-cage induction motor operating at 60 Hz is running at 1155 rpm. What is the percentage slip in this case?

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🔍 Key Concepts

• Synchronous speed of an induction motor and how to calculate it using frequency and number of poles • Definition of slip in an induction motor as a ratio or percentage • How to convert a slip ratio into percentage slip

💭 Think About

• First, compute the motor’s synchronous speed based on 60 Hz and 6 poles. Is the running speed higher or lower than this value? • Determine the difference between synchronous speed and actual speed, then compare that difference to synchronous speed. • After you find the slip as a decimal, think about how to express it as a percentage and which choice matches most closely.

✅ Before You Answer

• Confirm you are using the correct formula: Ns = 120 × frequency / number of poles for synchronous speed in rpm. • Make sure slip is calculated as (Ns − N) / Ns, not the other way around. • Double‑check your final number: did you convert the decimal slip to percent before comparing to the answer choices?

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Question 1 of 20

A six-pole three-phase squirrel-cage induction motor operating at 60 Hz is running at 1155 rpm. What is the percentage slip in this case?

0.03

0.0375

0.0425

0.05

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Question 1 / 205eccefa4bacbc34ba4d48220

Question 1 of 205eccefa4bacbc34ba4d48220

A six-pole three-phase squirrel-cage induction motor operating at 60 Hz is running at 1155 rpm. What is the percentage slip in this case?

Back

Question 1 of 20

5eccefa4bacbc34ba4d48220

A six-pole three-phase squirrel-cage induction motor operating at 60 Hz is running at 1155 rpm. What is the percentage slip in this case?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed