With the aid of power flow diagrams power slip graphs and equations explain the generating mode...
With the aid of power flow diagrams power slip graphs and equations explain the generating mode of a sub synchronous and super synchronous Wound-Rotor Doubly-Fed Induction Generator.
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With the aid of power flow diagrams power slip graphs and
equations explain the generating mode...
Electrical Machines
2) (a) Describe the principle of operation of 3-phase induction motor. [8 Marks](b) Explain slip as applied to three phase induction motor. [2 Marks]3) Derive an expression for the total armature torque of DC motor. [10 Marks]5) List the starting methods used in starting 3-phase induction motors and explain any two of these methods. [10 Marks]6) (a) A 60 kW, 400 V d.c. shunt motor has 4 poles a 2-circuit wave-connected armature winding with 450 conductors. The flux per pole...
5. a) Explain what is meant by the dead-time of a radiation detector and, with the aid of diagrams and equations, d...
5. a) Explain what is meant by the dead-time of a radiation detector and, with the aid of diagrams and equations, distinguish between the non-paralysable and paralysable models. b) Describe one method by which the dead-time of a detector can be measured using two radioactive sources. 12] c) Give one disadvantage of using a two source method for measuring dead-time and also give one practical refinement which may be incorporated into your method to obtain more accurate results. 12] d)...
5. a) Explain what is meant by the dead-time of a radiation detector and, with the aid of diagrams and equations, distinguish between the non-paralysable and paralysable models. b) Describe one method by which the dead-time of a detector can be measured using two radioactive sources. 12] c) Give one disadvantage of using a two source method for measuring dead-time and also give one practical refinement which may be incorporated into your method to obtain more accurate results. 12] d)...
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