题目内容
An inductor has a _______________ _______________ to oppose current flow in an AC circuit.
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A transformer has 1000 turns in primary side coil and 500 turns of secondary coil. Calculate the output voltage if the input voltage is 230V AC. Output voltage = _____________V AC (no decimal place)
In engineering, a solenoid converts electrical energy into mechanical work, such as converting energy into___________ motion
In engineering, a solenoid is commonly used to control a pneumatic or hydraulic valve to __________ and ____________.
A relay is an electrically operated switch. It consists of a set of input terminals for a single or multiple control signals, and a set of operating contact terminals. The switch may have any number of contacts in multiple contact forms, such as ________ contacts, _______ contacts, or combinations thereof.It uses a low current on/off to control __________ current on/off.
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