An inductor with an inductance of three henrys (H) is to be connected to a 60 Hz circuit. What will the inductive reactance be?

What is the maximum rating of overcurrent protection for a 480-240/120-volt transformer with a primary current of 5 amperes? There will be no overcurrent protection in the secondary.

An existing 25-cubic-inch junction box already contains two 12-2 with ground nonmetallic-sheathed cables supported with staples (no clamps). How many 10-2 with ground nonmetallic-sheathed cables can be installed in this box?

In a parallel circuit, E T = 240 V, R = 30  Ohms , and X L = 40 Ohms . What is I T?

Two capacitors, a 20 micro farad and a 30 micro farad , are connected in series. The total capacitance is _____.

How much horsepower is a 10 HP motor with a service factor of 1.25 designed to produce with no problems of overload?

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What is the minimum and maximum motor overload protection for a 3-hp, three-phase, 208-volt motor with a nameplate amp rating of 10.6 amps? Service factor is 1.12.

If a voltage is being induced into a conductor by electromagnetic induction, reversing the direction of motion of the conductor will _____.

What is the maximum feeder overcurrent protection for the following motors? Use time-delay fuses. Assume the feeder has been sized according to the NEC minimum size.• One 15-hp, 3-phase, 230-volt motor • Two 5-hp, 1-phase, 230-volt motors