دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: one of usually two, three, or more mud tanks that holds drilling mud that is being circulated into a borehole during drilling. They are called active tanks because they hold mud that is currently being circulated.

n: (A C) current in which the charge-flow periodically reverses and whose average value is zero. Compare direct current.

n: The current whose intensity and direction alter periodically with time.

n: an electric generator that produces alternating current.

n: an instrument for measuring electric current in amperes.

(A) n: the fundamental unit of electrical current;1 ampere = 6.28 x 1018 electrons passing through the circuit per second. One ampere delivers I coulomb in 1 second. ampere-hour n: a unit of electricity equal to the amount produced in 1 hour by a flow of I ampere. See ampere.

n: the number of turns in a coil multiplied by the number of amperes of current flowing through the coil.

n: the product of volts and amperes in an AC circuit when voltage and current are measured separately. If voltage and current are not in phase, apparent power is greater than true power.

v: to join metals by utilising the arc created between the welding rod, which serves as an electrode, and a metal object. The arc is a discharge of electric current across an air gap. The high temperature generated by the arc melts both the electrode and the metal, which fuse.

n: a part made of coils of wire placed around a metal core, in which electric current is induced in a generator, or in which input current interacts with a magnetic field to produce torque in a motor.

n: (ALP) offshore platform in which the riser is jointed to allow for changes in water level, current, and so on.