MCQ 11 MarkThe unit of magnetic flux density is ______.AWeberBweber/metreCweber/meter2Dweber . meter2View full question & answer→
MCQ 21 MarkThe part of the AC generator that passes the current from the armature coil to the external circuit is ______.Afield magnetsplit ringsBsplit ringsCslip ringsDbrushesView full question & answer→
MCQ 41 MarkWhich of the following converts electrical energy into mechanical energy?AMotorBBatteryCGeneratorDSwitchView full question & answer→
MCQ 51 MarkAn electric generator convertsAelectrical energy into mechanical energyBmechanical energy into heat energyCelectrical energy into electrical energyDmechanical energy into electrical energyView full question & answer→
MCQ 61 MarkThe most suitable material for making permanent magnets is ………………..AcopperBaluminumCironDsteelView full question & answer→
MCQ 71 MarkA magnetic needle is kept in a non-uniform magnetic field. It experiences …………….Ba force but not a torqueCa torque but not a forceDneither a force nor a torqueView full question & answer→
MCQ 81 MarkMagnetic field lines determine ______Athe shape of the magnetic fieldBonly the direction of the magnetic fieldConly the relative strength of the magnetic fieldDboth the direction and the relative strength of the magnetic fieldView full question & answer→
MCQ 91 MarkFor making a strong electromagnet the material of the core should be_______.AbrassBlaminated steel stripsCsoft ironDsteelView full question & answer→
MCQ 101 MarkWhich of the following instruments works by electromagnet-ic induction?AdynamoBmoving coil galvanometerCtelephone receiverDsimple motorView full question & answer→
MCQ 111 MarkInduced current flows through a coil ______.Amore than the period during which flux changes through it.Bless than the period during which flux changes through itConly for the period during which flux changes through itDNone of the aboveView full question & answer→
MCQ 121 MarkAt the centre of a magnet, the magnetism is ______ .-AzeroBsame as the polesCmaximumDminimumView full question & answer→
MCQ 131 MarkA magnetic field exerts no force on ………………Astationary electric chargeBa magnetCan electric charge moving perpendicular to its directionDan unmagnetized iron bar.View full question & answer→
MCQ 141 MarkThe magnetic field produced due to a circular wire at its centre is _______.Aat 45° to the plane of the wireBat 60° to the plane of the wireCin the plane of the wireDperpendicular to the plane of the wireView full question & answer→
MCQ 151 MarkThe direction of the magnetic field around a straight conductor carrying current can be determined by …………………AFleming’s left-hand ruleBLenz’s lawCRight-hand thumb ruleDFleming’s right-hand ruleView full question & answer→