a) Slots are skewed b) Salient pole tips are changed c) Winding is made well distributed d) All of these Ans: (d)
a) Reduces life of the machine b) Reduces power factor c) Reduces generated voltage d) Causes no significant evil effect Ans: (a)
a) Phase sequence should be the same b) Frequency should be the same c) Terminal voltage should be the same d) All of these Ans: (d)
a) Stop running b) Run as a synchronous motor c) Run as a generator d) None of these Ans: (c)
a) Frequency b) Back emf c) Generated voltage d) All of these Ans: (a)
a) Increase the speed b) Decrease the speed c) Change the frequency d) Either increases or decreases the speed Ans: (b)
a) Reduction of bearing friction b) Reduction of eddy current loss c) Economy d) High mechanical stress Ans: (d)
a) 3Ω b) >3Ω c) <3Ω d) >>3Ω Ans: (c)
a) 11 kV b) 33 kV c) 66 kV d) 132 kV Ans: (a)
a) Third b) Fifth c) Seventh d) Ninth Ans: (d)