The ratio of the peak output voltage, in complex notation, of an electric filter to the output voltage at the frequency being considered.
Related Terms 
SEEBECK EFFECT
When two different adjacent metals are heated, an electric current is generated between the metals.

DIELECTRIC STRENGTH
A measure of the ability of an insulating material to withstand electric stress (voltage) without failure. Fluids with high dielectric strength (usually expressed in volts or kilovolts) are good electrical insulators. (ASTM Designation D 877.)

AMMETER
An instrument for measuring the magnitude of electric current flow.

ARC
A flash, caused by an electric current ionizing a gas or vapor.

ASME PART PEB SECTION I
Requirements for electric boilers.

HARMONIC
1. A sinusoidal quantity having a frequency that is an integral multiple of the frequency of a periodic quantity to which it is related. 2. A signal having a frequency which is an integral multiple of the fundamental frequency.

FILTRATION (BETA) RATIO
The ratio of the number of particles greater than a given size in the influent fluid to the number of particles greater than the same size in the effluent fluid.

ADIABATIC EFFICIENCY
The ratio of actual work output of a heat engine to the ideal output.

BETARATIO (ßRATIO)
The ratio of the number of particles greater than a given size in the influent fluid to the number of particles greater than the same size in the effluent fluid, under specified test conditions (see 'MultiPass Test').

BULK MODULUS (OF ELASTICITY)
A ratio of normal stress to a change in volume. A term used in determining the compressibility of a fluid. Data for petroleum products can be found in the International Critical Tables.
