Practice # 3 Electrical Measuring Instruments

Front

What is the recommended deflection range when using an ammeter?

Back

The deflection should be less than full scale.

Front

What is air damping in measuring instruments?

Back

Air damping is a common method of damping by mechanical means.

Front

What are the methods of meter damping?

Back

Meter damping may be accomplished by both electrical and mechanical means.

Front

How are voltmeters connected in a circuit?

Back

Voltmeters are connected in parallel to a circuit.

Front

What does it mean for a meter to be self-excited?

Back

A self-excited meter operates from a power source within the meter.

Front

What is the purpose of an ammeter?

Back

An ammeter measures the current flowing through a circuit.

Front

What is the difference between series and parallel connections in circuits?

Back

In series, components are connected end-to-end; in parallel, components are connected across the same voltage source.

Front

What is the function of a voltmeter?

Back

A voltmeter measures the voltage across two points in a circuit.

Front

What is the significance of meter damping?

Back

Meter damping helps stabilize the reading of measuring instruments by reducing oscillations.

Front

What is the role of electrical damping in measuring instruments?

Back

Electrical damping uses electrical means to reduce oscillations and stabilize readings.