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ENEE 202Bachelor in Electrical Engineering · Semester 31 Paper Available

Electrical Machines

Past examination question papers and complete curriculum syllabus for Electrical Machines (ENEE 202), Bachelor in Electrical Engineering Semester 3 under Institute of Engineering (IOE), Tribhuvan University.

Sem 3 Subjects (5)View Full Semester Overview →
ENSH 201Engineering Mathematics IIIENEE 201Electric Circuit IIENEX 201Digital LogicENEE 202Electrical MachinesENCE 201Applied Dynamics
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Past Question Papers (PDF)

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Note: This question paper file (4th sem) was archived from an IOE exam session for the common Electrical Machines curriculum.

4th-sem_Electrical Machines.pdf

IOE Past Examination Paper

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Most Frequently Asked Questions

Top recurring IOE board exam questions for Electrical Machines with verified mark schemes, formula notation, and recurrence frequency.

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Year-wise & Session-wise Exam Papers

Complete questions from each exam session (Regular & Back exams from 2082 to 2069) for Electrical Machines. Click any session paper to expand.

Showing 124 questions across 19 exam session papers
Institute of Engineering • 2082 Kartik Board Examination
Q1[5 Marks]Magnetism and Magnetic Circuits
Explain the loss which occur when magnetic materials are subjected to alternating flux. How can we reduce these losses practically?
Q2[8 Marks]Transformer
Open circuit and short test on 5kVA, 220/400V, 50Hz, single phase transformer gave the following results: Short circuit test (on HV side): 40V, 11.4A, 200 Watts Determine the efficiency and the voltage regulation of the transformer at full load at 0.9 pf lagging.
Q3[2 Marks]Transformer
What are CTs and PTs and their use? Prove with suitable assumption that copper saving in auto transformer is significant when the transformation ratio is nearly equal to unity.
Q4[8 Marks]DC Motors
A 240 V DC shunt motor runs at 800 rpm and takes armature current of 2A. Find the resistance required in series with the shunt winding so that the motor may run at 950 rpm when taking armature current of 28 A. Assume flux is proportional to field current. Shunt field resistance is and armature resistance is .
Q5[2 Marks]DC Motors
What is the necessity of a starter in a DC motor? Describe the working of 3-point starter and its limitation.
Q6[5 Marks]Three-Phase Induction Machines
A 400 V, 4-pole, 50 Hz, 3 phase slip ring induction motor has a star connected stator winding and a star connected rotor winding. At standstill the voltage between the two slip rings is 190V. The stator impedance is . The rotor resistance and reactance at standstill are and respectively. The stator to rotor turn ration is 1: 1. The motor consumes 600 Watts at no load. Calculate: i) Speed at which the motor develops the maximum torque. ii) Efficiency of the motor when it is running at 1,380 rpm.
Q7[5 Marks]Three-Phase Induction Machines
The motor consumes 600 Watts at no load. Calculate:\n(i) Speed at which the motor develops the maximum torque.\n(ii) Efficiency of the motor when it is running at 1,380 rpm.
Q8[8 Marks]Single-Phase Transformers and Equivalent Circuits
State the conditions for proper operation of two transformer in parallel giving reasons for imposition of each of these conditions.
Q9[8 Marks]DC Generators and Operating Characteristics
Explain the voltage build up process in the DC shunt generator and define its critical resistance and critical speed.
Q10[8 Marks]Three-Phase Induction Motors
Explain the torque-slip characteristics of 3-phase induction motor and also explain the effect of rotor resistance in the characteristics.
Q11[8 Marks]Three-Phase Induction Motors
Explain the working principle of a self-excited three-phase induction generator, with the help of a suitable figure.

Curriculum Syllabus & Course Topics

Sourced from TU curriculum portal
Full Syllabus (PDF)
Chapter-wise Units & Micro-Syllabus Topics (7 Units)

  1. 1. Electromechanical Energy Conversion Principles

    5

  2. 2. Single-Phase Transformers and Equivalent Circuits

    8

  3. 3. Three-Phase Transformers and Connections

    6

  4. 4. DC Generators and Operating Characteristics

    6

  5. 5. DC Motors, Speed Control, and Braking

    6

  6. 6. Three-Phase Induction Motors

    8

  7. 7. Synchronous Generators (Alternators)

    6

Examination Scheme & Marks Distribution

Evaluation Structure

  • Final Board Theory Exam: 60 Marks (Pass mark: 24)
  • Internal Assessment: 40 Marks (Pass mark: 16)
  • Practical / Lab Exam: 25 or 50 Marks (Continuous lab evaluation + viva, where applicable)

* This is the general current IOE 60/40 scheme; verify course-specific details in the syllabus above.

Exam Preparation Guidelines

  • Review the available past examination paper to understand question styling, typical derivation topics, and marks allocation.
  • Practice drawing labeled circuit schematics, deriving transfer functions, and showing systematic mathematical steps.
  • Structure answers with labeled diagrams, concise bullet points, and highlight final answers in numerical solutions.
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Curriculum Syllabus & Marking Scheme