Electrical Instrument Troublshooting

The pointer of a D'Arsonval meter movement is deflected in proportion to the amount of current through the:

• needle

• coil

• probes

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

The current sensitivity of a meter movement is the amount of current required to drive the meter movement to a:

• half-scale deflection

• full-scale deflection

• no deflection

Meter damping may be accomplished by:

• electrical means

• mechanical means

• both electrical and mechanical means

The basic idea of a multirange ammeter is to make the meter usable over a wide range of voltages. In order to accomplish this, each range must utilize a different:

• shunt resistor

• voltage source

• capacitor

• transformer

When voltmeters are used, they are connected to a circuit in:

• series

• parallel

• series-parallel

The function of the ohmmeter is to measure.

• electromotive force

• power consumption

• resistance

The chief advantage of the megger over an ohmmeter is its capacity to measure resistance with a potential, or “breakdown” voltage.

• high
• low

• varied

8. Infinite resistance indicates a _________ circuit.

• open

• closed

• short

• parallel

Electric power is measured by means of a .

• voltmeter

• wattmeter
• current meter

The viewing capabilities of the oscilloscope make it possible to see and quantify various ______ characteristics.

• waveform
• resistance

• oscillator

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-5