Examiner lecturer: Hawraa Qasim Date: 16/4/2018 unleridtions&Measurements Division: Electrical Engineering a2: a) What is the different between Average Responding AC meter & true Responding AC meter (Dynamometer)? b) What is the error? And what is the reasons of Instrumentation errors? c) Design an Aryton shunted (by indirect method) to provide an ammeter with current ranges of (1A- 5A-10A-20A). A basic meter with an internal L/ K resistance 5032 and half scale deflection current 0.5mA is to be used. 02: a) Derive the

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