Which of the following works on torque on the current carrying conductor placed in magnetic field ? A. galvanometer B. ammeter C. voltmeterD. all of the above

A.C cannot be used for________________? A. producing heat B. producing lightC. magnetizing and electroplating D. all the above

Which one of the following functions like a motor ? A. galvanometer B. ammeter C. voltmeterD. all of above

An alternating current or voltage________________? A. fluctuates off and on B. varies in magnitude alone C. changes its direction again and againD. changes its magnitude continuously and reverses its direction of flow after regularly recurring intervals.

emf induced in a circuit according to Faradays law depends on the_____________? A. maximum magnetic fluxB. rate of change of magnetic flux C. change in magnetic flux D. initial magnetic flux

Weber is the unit of_____________? A. Magnetic field intensity B. magnetic inductionC. magnetic flux D. self-inductance

A.C cannot be used for_______________? A. producing heat B. producing lightC. magnetizing and electroplating D. all the above

A dynamo converts______________? A. mechanical energy into electrical energy B. electrical energy into mechanical energy C. magnetic energy into mechanical energy D. magnetic energy into electrical energy

cmf generated by A.C dynamo depends upon_____________? A. number of turns in the coil B. magnetic field strength C. frequency of rotationD. all of above

Current produced by moving the loop of wire across a magnetic field is called_____________? A. A.C current B. D.C currentC. induced current D. mean square current