a) Inductance of instruments b) First derivative of inductance with respect to time c) First derivative of inductance of instruments with respect to deflection angle d) Current Ans: (c)
a) Moving iron instruments b) Electrodynameter type instruments c) Electrostatic instruments d) None of the above Ans: (c)
a) Current b) Voltage c) Fact that a force exists between the two plates having opposite charges d) Power Ans: (c)
a) Moving iron instruments b) Electrodynamic instruments c) Induction type instruments d) Hotwire instruments Ans: (c)
a) Current of electrical circuits b) Voltage of electrical circuits c) Current density of electrical circuits d) Resistance of electrical circuits e) Conductivity of electrical circuits Ans: (e)
a) True b) False Ans: (b)
a) Iron loss component of magnetizing current b) Magnetizing component of the magnetizing current c) (a) and (b) both d) (a) or (b) Ans: (a)
a) Low reluctance and low iron loss b) High reluctance and high iron loss c) Low reluctance and high iron loss d) High reluctance and low iron loss Ans: (a)
a) There will be high current in the secondary winding b) There will be very high induced voltage in the secondary winding c) There will be very weak flux density in the core d) The transformer will burn immediately Ans: (b)
a) Increase b) Decrease c) Remain same d) Be very small Ans: (c)