Consider the following statements: Star delta starter is used in 3-phase induction motor because it 

1. Prevents heating of the motor winding 

2. Ensures permissible minimum starting current 

3. Is regulated by electricity authority 

4. Ensures smooth run up to full load 

 Of these statements (a) 1, 2 and 3 are correct (b) 2, 3 and 4 are correct (c) 1, 3 and 4 are correct (d) 1 and 2 are correct 
in Induction Machine by

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Consider the following statements: Star delta starter is used in 3-phase induction motor because it 

1. Prevents heating of the motor winding 

2. Ensures permissible minimum starting current 

3. Is regulated by electricity authority 

4. Ensures smooth run up to full load 

 Of these statements (a) 1, 2 and 3 are correct (b) 2, 3 and 4 are correct (c) 1, 3 and 4 are correct (d) 1 and 2 are correct 

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