Which of the Following Cannot Be Measured or Calculated by a Hydrophone

question 8

Multiple Choice

Which of the following cannot be measured or calculated by a hydrophone?

• A) Period.
• B) Amplitude.
• C) Impedance.
• D) Pulse duration.

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Definitions:

Field Exciter

A device or circuit that provides the necessary DC current to the magnetic field winding of a generator or motor to initiate or enhance its operation.

Differential Setting

In protective relays, refers to the adjustment that determines the difference in current or voltage at which the device will operate to protect electrical equipment.

Compounding

Generally indicates the voltage increase caused by the series field as compared to the voltage drop of the generator.

Exciting

The process of supplying a magnetic field to a core or coil in electrical devices to induce a magnetic flux.