Solved question paper for EM May-2022 (DIPLOMA 3rd)
Solved Question Paper
Electrical Machines May-2022
PSBTE • DIPLOMA • ECE(Industry Integrated) • 3rd • May-2022
Electrical Machines for Punjab State Board of Technical Education Diploma in Engineering, ECE(Industry Integrated) 3rd semester is a subject page made to help students find subject-wise previous year papers and old question papers for exam preparation. It supports revision by showing how questions are usually asked, what topics repeat, and how the paper pattern may look in board exams. Students searching for Electrical Machines previous year papers, question papers PDF, or important questions for 3rd semester diploma can use this page to prepare with more focus. BRpaper is not the official website of Punjab State Board of Technical Education, and it only helps students access exam-related material for study and practice.
These Questions are downloaded from www.brpaper.com. You can also download previous years question papers of 10th and 12th (PSEB & CBSE), B-Tech, Diploma, BBA, BCA, MBA, MCA, M-Tech, PGDCA, B-Com, BSc-IT, MSC-IT.
Solved Questions
Solved-
c. Star connection.Very Short Answer 1 Marks May-2022 • PSBTE DIPLOMA
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d. VOLTAGE REGULATION.Very Short Answer 1 Marks May-2022 • PSBTE DIPLOMA
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a. Efficiency.Very Short Answer 1 Marks May-2022 • PSBTE DIPLOMA
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b. KW = KVA x _____.Fill in the Blanks 1 Marks May-2022 • PSBTE DIPLOMA
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e. Lenz’s law.Very Short Answer 1 Marks May-2022 • PSBTE DIPLOMA
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f. Motor.Very Short Answer 1 Marks May-2022 • PSBTE DIPLOMA
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g. The frame of a D.C motor is made of _____.Fill in the Blanks 1 Marks May-2022 • PSBTE DIPLOMA
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h. Power factor.Very Short Answer 1 Marks May-2022 • PSBTE DIPLOMA
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i. What name is given to the coils across which load is connected?Very Short Answer 1 Marks May-2022 • PSBTE DIPLOMA
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j. Servo motors.Very Short Answer 1 Marks May-2022 • PSBTE DIPLOMA
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k. Stator stampings are made of _____.Fill in the Blanks 1 Marks May-2022 • PSBTE DIPLOMA
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l. Synchronous motor is _____.Fill in the Blanks 1 Marks May-2022 • PSBTE DIPLOMA
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m. Ideal Transformer.Very Short Answer 1 Marks May-2022 • PSBTE DIPLOMA
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n. How can direction of rotation of a D.C motor be determined?Very Short Answer 1 Marks May-2022 • PSBTE DIPLOMA
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o. How can iron loss be minimised?Very Short Answer 1 Marks May-2022 • PSBTE DIPLOMA
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i. What is the significance of back E.M.F.?Short Answer 1 Marks May-2022 • PSBTE DIPLOMA
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ii. Discuss the losses in transformer?Short Answer 5 Marks May-2022 • PSBTE DIPLOMA
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iii. What is the principle operation of universal motor?Short Answer 5 Marks May-2022 • PSBTE DIPLOMA
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iv. What are the advantages of 3 phase system over single phase system?Short Answer 5 Marks May-2022 • PSBTE DIPLOMA
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v. Explain the working principle of Auto transformer?Short Answer 5 Marks May-2022 • PSBTE DIPLOMA
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vi. What are the applications of synchronous machines?Short Answer 5 Marks May-2022 • PSBTE DIPLOMA
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vii. Explain faraday’s law of electromagnetic induction?Short Answer 5 Marks May-2022 • PSBTE DIPLOMA
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viii. What is the necessity of starter in D.C motor?Short Answer 5 Marks May-2022 • PSBTE DIPLOMA
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a. Explain the principle, construction and uses of D.C Motor?Long Answer 10 Marks May-2022 • PSBTE DIPLOMA
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b. Define efficiency of a transformer and derive the condition for obtaining maximum efficiency?Long Answer 10 Marks May-2022 • PSBTE DIPLOMA
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c. Explain the constructional features of a 3 phase induction motor?Long Answer 10 Marks May-2022 • PSBTE DIPLOMA
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d. i) Reluctance motor
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d. ii) Universal motor
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d. iii) A.C series motor
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e. Explain with the help of neat diagram the working of a star delta starter for starting 3 phase induction motor?Long Answer 10 Marks May-2022 • PSBTE DIPLOMA
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FAQ
Frequently Asked Questions
Answers about this subject, solved papers, and preparation.
01 Where can I find Electrical Machines question papers for PSBTE 3rd semester?
This page is meant to help students find subject-wise previous year papers for Electrical Machines in PSBTE Diploma ECE(Industry Integrated) 3rd semester.
02 Are these Electrical Machines papers useful for revision?
Yes. Previous year papers help students revise important topics, understand question trends, and get familiar with the exam pattern.
03 Can I search for Electrical Machines question papers PDF here?
Students often look for question papers PDF for quick revision, and this subject page is organized around that search intent.
04 Does BRpaper provide official Electrical Machines papers?
No. BRpaper is not the official website of Punjab State Board of Technical Education. It only helps students find exam preparation material.
05 Are solved Electrical Machines previous year papers guaranteed on this page?
Solved papers may be a common search expectation, but this page is focused on previous year question papers and study support, not guaranteed answer keys.