a) True b) False Ans: (a)
a) It takes into account the varying voltage of charge and discharge b) Charge volts are constant c) Discharge volts are constant d) Polarization is neglected Ans: (a)
a) Ampere b) Volts c) Ampere-hours d) Watts Ans: (c)
a) True b) False Ans: (a)
a) Oil transformers b) Cells c) Mercury are rectifier d) Oil cylinders Ans: (b)
a) 80% b) 90 to 95% c) 72 to 80 % d) 85% Ans: (b)
a) Balance weight is more than control weight b) Current is proportional to deflection angle c) Current is proportional to sin θ, where θ is deflection angle d) Balance weight itself is not uniform Ans: (c)
a) Moving iron voltmeter b) Permanent Magnet type ammeter c) Induction type ammeter d) Moving iron (attraction type) ammeter Ans: (d)
a) The size of the instrument will increase b) Eddy currents will pass through the iron and thereby causing loss c) The presence of a permanent magnet required for such purpose would affect the defection and hence the reading of the instruments d) Weight of instrument will increase Ans: (c)
a) Instantaneous value of alternating on b) Average value of current c) R.m.s. value of alternating current d) voltage Ans: (c)