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For a three-phase induction motor drive, which of the following technique is NOT used?

For a three-phase induction motor drive, which of the following technique is NOT used? Correct Answer Moisture control

For a three-phase induction motor drive, the moisture control technique is not used.

The speed control of three-phase induction motor from the stator side are classified as:

  • V/f control or frequency control
  • Changing the number of stator poles
  • Controlling supply voltage
  • Adding rheostat in the stator circuit

 

The speed controls of three-phase induction motor from rotor side are classified as:

  • Adding external resistance on the rotor side
  • Cascade control method
  • Injecting slip frequency emf into rotor side

Related Questions

In the following question, sentences of a paragraph have been jumbled and labelled as A, B, C and D. You are required to rearrange the jumbled sentences of the paragraph and mark your response accordingly by selecting the correct option. A: An induction motor can, therefore, be made without electrical connections to the rotor. B: Three-phase squirrel-cage induction motors are widely used as industrial drives because they are self-starting, reliable and economical. C: An induction motor's rotor can be either wound type or squirrel-cage type. D: An induction motor or asynchronous motor is an AC electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding.
Which one of the following four addresses is NOT EXACTLY same as the one given below? Cabramatta 360 Elizabeth Drive, 2170 Mount Pritchard, Australia (i) Cabramatta 360 Elizabeth Drive, 2170 Mount Pritchard, Australia (ii) Cabramatta 360 Elizabeth Drive, 2170 Mount Pritchard, Australia (iii) Cabrematta 360 Elizabeth Drive, 2170 Mount Pritchard, Australia (iv) Cabramatta 360 Elizabeth Drive, 2170 Mount Pritchard, Australia
Which one of the following four addresses is NOT EXACTLY same as the one given below?  Kedrick Shaw 72 Glenwood Drive, Thornton, NSW 2322, Australia (i)  Kedrick Shaw  72 Glenwood Drive,  Thornton, NSW 2322, Australia (ii) Kedrick Shaw  72 Glenwood Drive,  Thornton, NSW 2322, Australia (iii) Kedrick Shaw  72 Glenwood Drive,  Thornton, NSW 2322, Australia (iv) Kedrick Shaw  72 Glemwood Drive,  Thornton, NSW 2322, Australia
For a power system having induction motor loads, an overexcited synchronous motor is also attached. The induction motor will now operate at __________
For a power system having induction motor loads, an overexcited synchronous motor is also attached. The induction motor will now operate at ________
In case of synchronous motor, which of the following are true? a. Synchronous motor is not self-starting b. If the rotor poles are excited by field current and the stator terminals are connected to AC supply, motor vibrates. c. Variable frequency supply is used to start synchronous motor. d. By using frequency converter, a synchronous motor can be brought from standstill to its desired speed.
Examine the following statements relating to induction and identify those which are either true or false.
1. Induction today is renamed as empolyee orientation programme.
2. It is also known by the term 'on boarding'.
3. It is for the purpose of socialising the new employees.
4. Informal induction is better than formal induction.
Consider the following statement with reference to Popper's solution of the problem of induction, and mark the correct option.
1. There is no rationally justifiable method of induction.
2. There is no reliable method of induction.
3. There is a reliable method of induction.
Choose the correct answer:
You are about to install a second IDE hard drive in a PC that has only one IDE adapter. Your first hard drive will still be the boot drive. How should the second drive be configured?
Rheostat method of speed control of induction motor is used in which of the following induction motor?