Electrical Engineering Test 9

The number 4.38 × 10^–3 expressed as a number having a power of 10^–6 is

The quantity 43 × 10^-3 is the same as

A certain appliance uses 350 W. If it is allowed to run continuously for 24 days, how many kilowatt-hours of energy does it consume?

The following resistors (one each) are connected in a series circuit: 470 , 680 , 1 k, and 1.2 k. The voltage source is 20 V. Current through the 680 resistor is approximately

The sum of all the voltage drops around a single closed loop in a circuit is zero.

Find the total current through R₃ in the given circuit.

A phasor represents

Of the following capacitors, which one has the highest dielectric constant?

Faraday's law states that relative motion between a magnetic field and a coil induces a voltage across the coil.

Inductance is indirectly proportional to the square of the number of turns, the permeability, and the cross-sectional area of the core.

If 25 W of power are applied to the primary of an ideal transformer with a turns ratio of 10, the power delivered to the secondary load is

A transformer changes ac to dc.

A filter passes all frequencies.

To tune a parallel resonant circuit to a higher frequency, the capacitance should be

A series resonant circuit is commonly called a tank circuit.

Referring to the given circuit, find Z_TH if R is 15 k and R_L is 38 k.

In an ac circuit, power to the load peaks at the frequency at which the load impedance is the complex conjugate of the output impedance.

The superposition theorem is useful for the analysis of single-source circuits.

Like Thevenin's theorem, Norton's theorem provides a method of reducing a more complex circuit to a simpler, more manageable form for analysis.

A balanced load is one in which all the impedances are equal.