air gap


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air gap

[′er ‚gap]
(electronics)
A gap or an equivalent filler of nonmagnetic material across the core of a choke, transformer, or other magnetic device.
A spark gap consisting of two electrodes separated by air.
The space between the stator and rotor in a motor or generator.
(engineering)
The distance between two components or parts.
In plastic extrusion coating, the distance from the opening of the extrusion die to the nip formed by the pressure and chill rolls.
The unobstructed vertical distance between the lowest opening of a faucet (or the like) which supplies a plumbing fixture (such as a tank or washbowl) and the level at which the fixture will overflow.
(geology)
(petroleum engineering)
In an offshore drilling operation, the distance from the normal sea surface level to the bottom of the base of the drilling platform.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

air gap

air gap, 2
air gap, 1
1. The unobstructed vertical distance between the lowest opening of a faucet (or the like) which supplies a plumbing fixture (such as tank or wash bowl) and the level at which the fixture will overflow.
2. In a drainage system, the unobstructed vertical distance between the outlet of a waste pipe and the flood-level rim of the receptacle into which it discharges.
3. A gap in an electric or magnetic circuit; usually acts as a high-resistance path in the circuit.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
Compared with the traditional secondary structure TPMLWG, the efficiency of the new secondary structure is higher, and the sinusoidal characteristic of the air gap flux density is improved, and the cogging force and the mechanical vibration are smaller during the work process.
Although mechanical tolerances met by the end of the machining process are low, the manual insertion of the sample inside the line inevitably implies the presence of an air gap. It will influence the accuracy of measurement results.
[13-15] launched the comparison between the PV walls with air gap and the one with no air gap in terms of the electricity generation efficiency and indoor heat gain.
In the case where the air gap is large relative to the pole-width, flux fringing is responsible for the high flux densities found outside the area in-between the pole faces.
It can be seen that air gap length can heavily affect ultimate performances of fiber membranes.
Model Acer Iconia W4 Display 8.0-inch IPS HD(1280x800p) display with Zero Air Gap technology OS Windows 8.1 OS Processor Fourth generation Intel Atom processor with 1.8GHz CPU speed Storage capacity Will be available in 32GB and 64GB, both can support additional 32GB via memory card Camera Main: 5.0-megapixel camera with full HD video recording abilityFront: 2.0-megapixel camera Battery *** Add-ons Wi-Fi, Bluetooth v3.0, micro-HDMI port, Microsoft Office Home and Student 2013 Dimension and weight 10.75 mm thick; weighs 415 g Price 32GB-$330 (a[sup.1]20,230); 64GB-$380 (a[sup.1]23,300)
On the other hand, the air-gap length of the machine and mean radius of the air gap are approximated, and therefore the geometrical model of the machine is simplified.
To achieve a wide impedance bandwidth parasitic DRs and air gap layers are used as the case of stacked [19] and multisegment DRAs [20].
3) shows that the influence of natural convection on general heat transfer is insignificant when a joining small air gap up to 3.0 mm thickness occurs around the thermal-insulating layer.
For example antenna reported in [18] uses stacked configuration [18], whereas geometry presented in [19] uses suspended configuration (with air gap) [19].
These weighing systems measure tank weight based on the deformation of an air gap surrounding a patented, capacitive sensor.
The units have a slight vacuum imposed on the air gap when they are being made; you can see a slight dishing if you look closely.