Fig 1 : An Engineer is taking values using a Multimeter
1. What is a Controller ?
ans : Any device that serves to control the power to the equipment to which it is connected.
2. What is an Induction Motor ?
ans : An ac motor in which the stator or primary winding is connected to the power source and a secondary winding carries the induced current.
3. What is Mesh Analysis ?
ans : An algebraic technique for writing simultaneous linear equations in terms of unknown mesh currents in any electrical network.
4. What is Phase sequence ?
ans : The order in which successive phase (or line) voltages reach their respective maximum values.
5. What do you mean by HSGT and HSST ?
ans : An acronym for high speed ground transport and high speed surface transport.
6. What is a Brushless DC motor ?
ans : A small dc motor in which commutation is produced by electronic means using a variety of ingenious engineering designs.
7. What is a Transducer ?
ans : An energy conversion device that receives energy from one source and delivers energy to another system in such a manner that the desired characteristics of the input appear at the output.
8. What is a Short circuit test ?
ans : A test to determine the equivalent primary and secondary copper losses of the transformer, along with its equivalent resistance, reactance, and impedance. Data from this test enables calculation of voltage regulation.
9. What is an Autotransformer ?
ans : Multi winding transformer connected in such a way that it has one continuous winding of which part is common to both the primary and secondary circuits to which the auto-transformer is connected.
10. What is a Transformer ?
ans : A device which operates on the principal of mutual induction and used for transferring energy from one circuit to another.
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