Discussion

Match the pair :

SET I	SET II
(a) Output power measurement	(i) Q meter
(b) High resistance measurement	(ii) Calomel electrode
(c) pH measurement	(iii) Megger
(d) Electrical properties of coil and capacitors	(iv) Wattmeter

Answer: C

The correct matching is a-iv, b-iii, c-ii, d-i.

Output power is measured with a wattmeter (iv).
High resistance, such as insulation resistance, is measured with a megger (iii).
pH is measured with a glass electrode against a calomel reference electrode (ii).
The electrical properties of coils and capacitors, such as Q, inductance and self-capacitance, are measured with a Q meter (i).

The other codes give the Q meter to power measurement or the megger to pH, which do not match the instruments' uses.

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