Which of following are used for both protection as well as metering? All Questions › Category: Power System Analysis › Which of following are used for both protection as well as metering? 0 Vote Up Vote Down Rajasri Mundrathi Staff asked 3 years ago Options: a) Energy meter.b) Wattmeters.c) Instrument transformer.d) Power factor meters. 1 Answers 0 Vote Up Vote Down Rajasri Mundrathi Staff answered 3 years ago The correct answer is Instrument transformer.