Bissoy.com
Doctors Medicines MCQs Q&A

When a single-phase supply is connected across a single-phase winding, the nature of the magnetic field produced is:

When a single-phase supply is connected across a single-phase winding, the nature of the magnetic field produced is: Correct Answer Pulsating in nature

When a single-phase supply is connected across a single-phase winding, a pulsating magnetic field is produced.

A pulsating magnetic field cannot rotate a rotor due to inertia, that’s why a single-phase induction motor is not self-starting and requires some particular starting means.

[ alt="F1 U.B Madhu 11.04.20 D1" src="//storage.googleapis.com/tb-img/production/20/04/F1_U.B_Madhu_11.04.20_D1.png" style="width: 134px; height: 95px;">

Related Questions

Consider the following statement: a) Magnetic field lines are always form closed curve. b) Magnetic field lines start from north pole outside the magnet c) Magnetic field lines start from south pole outside the magnet Which of the following is a property of magnetic field lines?
Distributed winding is a type of winding in electrical machines where all the winding turns are arranged in a number of full pitches or fractional pitches. These coils are then placed in phase form or the commutator winding in slots spread around the periphery of the air gap. This type of winding used in
A current carrying coil having magnetic moment M is placed in a magnetic field B. Initially the magnetic field is perpendicular to the plane of the coil and then coil turned about an axis such that the angle between the magnetic field and the plane of the coil become zero. Then choose the correct statement.
Which of the following statements are CORRECT? I. Change in magnetic field produces induced current. II. Flow of current in a conductor produces magnetic field. III. Magnetic field related to coil can be produced by motion between conductor and coil.
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: The magnetic field disappears when the current is turned off. B: A current through the wire creates a magnetic field which is concentrated in the hole, denoting the center of the coil. C: An electromagnet is a type of magnet in which the magnetic field is produced by an electric current.  D: Electromagnets usually consist of wire wound into a coil. 
Which of the following statements are correct?
1. Change in magnetic field produces induced current.
2. Flow of current in a conductor produces magnetic field.
3. Magnetic field related to coil can be produced by motion between conductor and coil.
A force \(\vec F\), acting on a electric charge q, in presence of electro-magnetic field, moves the charge parallel to the magnetic field with velocity \(\vec v\). Then \(\vec F\) is equal to (where \(\vec E\)and \(\vec B\) are electric field and magnetic field respectively)
Consider a single phase synchronous machine of cylindrical rotor type. A single phase supply is given to the stator winding and a voltmeter is connected across rotor winding. For what value of θr, the voltmeter reads maximum?
Consider a single phase synchronous machine of cylindrical rotor type. A single phase supply is given to the stator winding, and a voltmeter is connected across rotor winding. For what value of θr the voltmeter reads a zero?
Which of the following is the reason for an iron core increasing the magnetic field of a coil of wire? 1. The iron atoms line up to add the magnetic field. 2. Iron is, among other things, attracted to a magnetic field. Choose the correct code.