Define specific magnetic loading and specific electric loading.
[3 marks]Derive an output equation for 3-ф induction motor.
[4 marks]Discuss the effect of variation of main dimension (D&L) on performance (Rating, losses & efficiency) of 3-ф induction motor.
[7 marks]State why a turbo alternator has smaller diameter and large length but hydro alternator has larger diameter and small length.
[3 marks]Explain the factors that affect the choice of specific electric loading in case of a 3-ф induction motor.
[4 marks]Define SCR and its importance in designing of synchronous machine.
[7 marks]Calculate the value of capacitance for maximum starting torque in 1-ф induction motor.
[7 marks]Explain the terms “critical speed” and “run-away speed” with reference to synchronous machine
[3 marks]Explain the factors which are to be considered while selecting the armature slots of a synchronous machine.
[4 marks]Explain steps for design of field winding of synchronous machine.
[7 marks]What is the role of damper winding in (i) synchronous generator and (ii) synchronous motor?
[3 marks]Explain the design difference between turbo and hydro alternator.
[4 marks]Write the steps and necessary equations for armature design of a synchronous machine.
[7 marks]Explain direct axis and quadrature axis synchronous reactance in synchronous machine.
[3 marks]State the rules for the selection of rotor slots in 3-ф squirrel cage induction motor.
[4 marks]Discuss factors affecting determining air gap length in 3-ф induction motor design.
[7 marks]Explain Harmonic torque in 3-ф induction motor.
[3 marks]Explain the factors that affect the choice of specific magnetic loading in case of a 3-ф induction motor.
[4 marks]What is dispersion coefficient? Explain its effect on maximum power factor.1
[7 marks]Derive the equation of MMF of damper winding.
[3 marks]Describe the methods for reducing the effect of harmonics torque.
[4 marks]Write a note on computer aided design of Induction motor.
[7 marks]Explain main differences between design of 1-ф and 3-ф induction motor.
[3 marks]Explain design of auxiliary winding for capacitor start motor in 1-ф induction.
[4 marks]Discuss advantage and application of FEM technique.
[7 marks]