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Consider the following statements related to an universal motor:

1. An universal motor runs on d.c. as well as on a.c.

2. No extra winding is required in a universal motor for ac operation.

3. The direction of rotation of universal motor can be reversed by reversing either the field or armature leads, but not both.

4. Universal motors are designed for operation at low speeds (less than 3500 rpm).

Of these, the correct statements are:

  • a)
    2, 3 and 4

  • b)
    1,2 and 4

  • c)
    1 and 2 

  • d)
    1 and 3

Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Consider the following statements related to an universal motor:1. An ...
⇒ The compensating winding is required in an universal motor for ac operation to neutralize reactance voltage.
⇒ Universal motors are designed for operation at high speeds (> 3500 rpm).
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Most Upvoted Answer
Consider the following statements related to an universal motor:1. An ...
Universal Motor:

A universal motor is a type of electric motor that can operate on both AC and DC power supply. It is a series-wound motor that is designed to operate on either DC or AC supply. Universal motors are used in many home appliances such as vacuum cleaners, food mixers, and power tools.

Correct statements:

1. An universal motor runs on d.c. as well as on a.c.
This statement is correct. Universal motors can operate on both DC and AC power supply. They are series-wound motors and can run on either AC or DC supply.

2. No extra winding is required in a universal motor for AC operation.
This statement is also correct. Universal motors do not require any extra winding for AC operation. They can operate on both AC and DC power supply without any modification.

3. The direction of rotation of universal motor can be reversed by reversing either the field or armature leads, but not both.
This statement is correct. The direction of rotation of a universal motor can be reversed by reversing either the field or armature leads. However, reversing both the field and armature leads will not reverse the direction of rotation.

4. Universal motors are designed for operation at low speeds (less than 3500 rpm).
This statement is incorrect. Universal motors are designed for high-speed operation and can achieve speeds of up to 20,000 rpm. They are commonly used in power tools and other applications that require high-speed operation.

Therefore, the correct statements are 1 and 2.
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Consider the following statements related to an universal motor:1. An universal motor runs on d.c. as well as on a.c.2. No extra winding is required in a universal motor for ac operation.3. The direction of rotation of universal motor can be reversed by reversing either the field or armature leads, but not both.4. Universal motors are designed for operation at low speeds (less than 3500 rpm).Of these, the correct statements are:a)2, 3 and 4b)1,2 and 4c)1 and 2d)1 and 3Correct answer is option 'C'. Can you explain this answer?
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