Self-Test A-4.3 Electrical Testing Instruments

Complete Self-Test A-4.3 and check your answers.

1. Match the digital multimeter symbol to its correct description.
   

   AC Voltage	___________	a.
   DC voltage	___________	b.
   Resistance	___________	c.
   AC or DC voltage	___________	d.
   Low Battery	___________	e.
   Continuity beeper	___________	f.
   Overload	___________	g.
   Microamperes	___________	h.

    

2. The most common clamp-on ammeters are available for AC currents only.
   1. True
   2. False

    

3. When using an in-line ammeter to measure current in a circuit, what must you ensure when connecting the multimeter?
   1. The power is off in the circuit
   2. The multimeter is connected near the source
   3. The multimeter is connected in series with the circuit
   4. The multimeter is connected in parallel with the source or load

    

4. When testing for ohms, the power must be left on in the circuit.
   1. True
   2. False

    

5. When testing a circuit for voltage, how must the meter be connected?
   1. In parallel with the circuit
   2. In series with the circuit
   3. To a de-energized circuit
   4. With both leads grounded

    

Answer Key: Self-Test A-4.3 is on the next page.