a) Electrostatic voltmeter b) Galvanometric voltmeter c) Ionic wind voltmeter d) Vacuum tube voltmeter Ans: (c)
a) A b) B c) C d) D Ans: (a)
a) Fused alumina b) Fused fireclay c) Fused alumina and fireclay d) Fused platinum Ans: (c)
a) True b) False Ans: (a)
a) Be similar to voltage wave form b) Be different from voltage wave from c) Have even harmonics d) Be sinusoidal Ans: (c)
a) Thicker wire than secondary winding b) Thinner wire than secondary winding c) Same thickness as secondary winding d) More turns than secondary Ans: (a)
a) For experimental purpose in the laboratory b) For vibration measurements c) For industrial measurements d) In recorders Ans: (c)
a) Schering bridge b) Anderson bridge c) Wein bridge d) Maxwell bridge Ans: (c)
a) Schering bridge method b) Maxwell bridge method c) Kelvin’s double bridge method d) Potentiometric method Ans: (c)
a) 40 V, 10 V respectively b) 30 V, 20 V respectively c) 50 V, 0 V respectively d) 20 V, 30 V respectively Ans: (a)