Earthing the secondary of CT

Short circuiting the terminals of the CT before disconnecting the ammeter

Switching a high resistance shunt between terminals of CT after disconnecting the ammeter

Disconnecting primary from supply

voltage, current and resistance

power, energy and power factor

insulation resistance and A.C. current only

ampere hour capacity and D.C current only

adjust its pointer to infinity mechanically

choose appropriate resistance range

set the pointer to zero by short-circuiting its probes by means of a potentiometer

do all the above

Range switch

Selector switch

Power ON - OFF switch

Function switch

have numerical readout

use LED and LCD displays

have a circuitry of digital design

use deflection type meter movement