a) Both voltage and current b) The voltage c) The current d) None of these Ans: (c)
a) At right angles to the axis of the magnetic field b) Along the axis of the magnetic field c) At 45° with the axis of the magnetic field d) None of these Ans: (b)
a) Decrease in the total output power b) Increase in the total output power c) Smoothening of the shape of output dc wave d) Increase in the magnitude of output voltage Ans: (c)
a) Pole shoes b) Yoke c) Shaft d) base Ans: (a)
a) mechanical rectifier b) mechanical inverter c) energy converter d) either (a) or (b) Ans: (a)
a) magnetor-striction effect b) piezo-electric effect c) hall effect d) all of these Ans: (d)
a) resistance wire b) carbon brush c) insulator d) copper lug Ans: (d)
a) carbon b) copper c) aluminium d) synthetic rubber Ans: (a)
a) along bisector of GNA and MNA b) along magnetic neutral axis (MNA) c) along geometrical neutral axis (GNA) d) arbitrarily Ans: (b)
a) under south pole b) under north pole c) arbitrarily d) in the interpolar region Ans: (d)