1. Direction of rotation of a coil in electric motor is determined by ? faraday law of electromagnetic inductors fleming’s right hand rule fleming’s left hand rule None of above Answer: fleming’s left hand rule Explanation: Fleming’s left hand rule. View Answer Discuss in Forum Report Question

 3. An electric generator actually acts as ? a converter of energy. an electromagnet. a source of neat energy. a source of electric charge. Answer: a converter of energy. Explanation: View Answer Discuss in Forum Report Question

 4. To convert an ac generator into dc generator ? A rectangular wire loop has to be used Split-ring type commutator must be used A stronger magnetic field has to be used Slip rings and brushes must be used Answer: Split-ring type commutator must be used Explanation: To convert an AC generator into DC generator the split ring type commutator are used which converts the direction of flow of induced current, in the external circuit, in the same direction throughout the complete rotation of the armature. View Answer Discuss in Forum Report Question

 5. In Fleming’s right hand rule direction in induced current is given by ? first finger thumb middle finger none of these Answer: middle finger Explanation: View Answer Discuss in Forum Report Question

 6. The frequency of direct current (DC) is ? 100 Hz 60 Hz 50 Hz 0 Hz Answer: 0 Hz Explanation: View Answer Discuss in Forum Report Question

 7. AC generator works on the principle of ? Joule’s law of heating faraday’s law of electromagnetic induction. none of the above ohms law Answer: faraday’s law of electromagnetic induction. Explanation: View Answer Discuss in Forum Report Question

 8. The magnetic field lines produced by a bar magnet ? Originate from the south pole and end at its west pole Originate from the north pole and end at its south pole Originate from the north pole and end at its east pole Originate from the south pole and end at its north pole Answer: Originate from the north pole and end at its south pole Explanation: Magnetic field lines produced by a bar magnet originate from the north pole and end at its south pole. View Answer Discuss in Forum Report Question

 9. The direction of induced current is given by ? Left hand thumb rule. Right hand thumb rule. Fleming’s right hand rule. Fleming’s left hand rule. Answer: Fleming’s right hand rule. Explanation: View Answer Discuss in Forum Report Question

 10. Material of the core of a strong magnet is ? steel copper soft iron aluminium Answer: soft iron Explanation: View Answer Discuss in Forum Report Question