Day 9 Measuring Instruments

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

• minimum deflection

Meter damping may be accomplished by:

• electrical means only

• mechanical means only

• Both electrical and mechanical

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 resistance

• meter scale

• series resistor

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

• series

• parallel

The function of the ohmmeter is to measure__________.

• electromotive force

• power consumption

• resistance

When the analog ohmmeter leads are open, the meter is at a full scale deflection, indicating an infinite ( ∞) resistance or a (an) __________ circuit.

• short

• open

• closed

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

• high

• low

• varied

Electric power is measured by means of a __________.

• Voltmeter
• Wattmeter
• Ammeter
• Ohmmeter

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

• resistance

• waveform

• transformers

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-5