DC - Meters & Resistance

The usual electrical quantities that need to be measured are voltage, current and resistance.

• True

• False

You can only use a digital meter to measure voltage.

• True

• False

Analog meters are polarised; that is, they have a fixed polarity.

• True

• False

A digital meter normally has no moving parts

• True

• False

An ammeter is used to measure voltage.

• True

• False

When an analog needle moves to its furthest point, this is called:

• full-scale deflection

• maximum deflection

• partial deflection

• full-scale movement

Measuring instruments are specified by their accuracy, resolution and:

• sensitivity

• size

• colour

• year of manufacture

What is used to stop analog meters’ needles from making rapid movements?

• Hair springs

• Nothing

• Aluminium

• Damping

What do ammeters use to allow them to measure high currents?

• Shunt resistor

• Capacitor

• Series resistor

• Moving iron

When the value to be measured is unknown, you should set a meter to its _________ range.

• lowest

• highest

• mid-

• average