Electrical Machine Design Multiple Choice Questions

Electrical Machine Design

Question 1.

D.C. machines designed with a large value of air gap length have

A.

 worst, ventilation

B.

 poor ventilation

C.

 better ventilation

D.

 none of the above

Explanation :

Explanation Not Provided

Question 2.

_________ electromagnets generally function as holding magnets.

A.

 Tractive

B.

 Portative

C.

 Either of the above

D.

 None of the above

Explanation :

Explanation Not Provided

Question 3.

By which of the following methods motor rating for variable load drives can be determined ?

A.

 Method of average losses

B.

 Equivalent current method

C.

 Equivalent torque method

D.

 Equivalent power method

E.

 All of the above

Explanation :

Explanation Not Provided

Question 4.

In direct cooled system using hydrogen both stator and rotor conductors are made

A.

 solid

B.

 hollow

C.

 perforated

D.

 any ofthe above

Explanation :

Explanation Not Provided

Question 5.

On which of the following variables heat convected depends ?

A.

 Power density

B.

 Temperature difference between heated surface and coolant

C.

 Thermal resistivity, density, specific heat

D.

 Gravitational constant

E.

 All of the above

Explanation :

Explanation Not Provided

Topics

Analog Electronics MCQs Automatic Control Systems MCQs Communication Systems MCQs Digital Electronics MCQs Electromagnetic Field Theory MCQs Electromagnetic Induction MCQs Electronic Devices and Circuits MCQs Materials and Components MCQs Measurement and Instrumentation MCQs Microprocessors MCQs Microwave Communication MCQs Networks Analysis and Synthesis MCQs Power Electronics MCQs Radio Receivers MCQs Satellite Communication MCQs A.C Fundamentals, Circuits and Circuit Theory MCQs RL Circuits MCQs RC Circuits MCQs RLC Circuits and Resonance MCQs Circuit Theorems and Conversions MCQs Circuit Theorems In Ac Analysis MCQs Integrated Circuits MCQs Magnetic Circuit MCQs Parallel Circuits MCQs Series Circuits MCQs Series Parallel Circuits MCQs Solid State Switching Circuits MCQs Time Response of Reactive Circuits MCQs Branch, Loop and Node Analyses MCQs Electrical Engineering Materials MCQs Electronics and Instrumentation MCQs Electrical Machine Design MCQs D.C. Generators MCQs D.C. Motors MCQs Capacitors MCQs Current Electricity MCQs Earthing or Grounding MCQs Electric Traction MCQs Electrical Cables MCQs Electrical Control Systems MCQs Electrical Inductors MCQs Electrolysis and Storage of Batteries MCQs Electrostatics MCQs Switchgear Protections MCQs Synchronous Motors MCQs Polyphase Induction Motors MCQs Single Phase Induction Motors MCQs Energy and Power MCQs Economics of Power Generation MCQs Power Plant Engineering in EE MCQs Regulated DC Power Supply MCQs FET(Field Effect Transistors) MCQs Heating and Welding MCQs Hybrid Parameters MCQs Industrial Drivers MCQs Rectifiers and Converters MCQs Magnetism and Electromagnetism MCQs Modulation and Demodulation MCQs Ohms Law MCQs Transistors MCQs OP amp MCQs Single Stage Transistor Amplifiers MCQs Multistage Transistor Amplifiers MCQs Transistor Audio Power Amplifiers MCQs Amplifiers With Negative Feedback MCQs Passive Filters MCQs Oscillators MCQs Voltage, Current and Resistance MCQs Alternating Current and Voltage MCQs Semiconductor Theory MCQs Semiconductor Diode MCQs Silicon Controlled Rectifiers MCQs Three Phase Systems In Power Applications MCQs Transformers MCQs Transmission and Distribution MCQs