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Which of the following statements regarding repulsion-start induction motor is incorrect ?

Which of the following statements regarding repulsion-start induction motor is incorrect ? Correct Answer In fractional horse power motors, it has replaced the capacitor motors

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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.
Below stated are some of the statements about the squirrel cage induction motor. You need to identify which of the following is incorrect. 1. Very poor speed control 2. Although they are energy-efficient white at full load, they need a lot of energy while being started. 3. They are susceptible to voltage variations. 4. The induction motor consumes more current when supply voltage is reduced. 5. They are explosion-proof as there are no brushes which eliminate the risks of sparking.
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 statements regarding a stepper motor: 1. The rotation angle of the motor is proportional to the input pulse. 2. The motor has full torque at standstill. 3. Speed and electric control signal of the motor vary mutually linearly. Which of the above statements are correct?
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 ________
Consider the following statements: In the above figure, the curves pertain to the DC motor A. Speed vs Armature current characteristic of a DC shunt motor B. Torque vs Armature current characteristic of a DC shunt motor C. Speed vs Armature current characteristic of a DC series motor D. Torque vs Armature current characteristic of a DC series motor
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:
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.
Consider the following statements regarding synchronous machines: 1. When a synchronous motor is over-excited, its back emf is greater than the supply voltage 2. When a synchronous motor is over-excited, its power factor is leading 3. Synchronous motor is used as capacitor where load is so large that construction of a static capacitor is impractical Which of these statements are correct?