Explore topic-wise MCQs in Engineering.

The formula for finding voltage when resistance and current are known is V = I/R.

The formula for finding resistance when current and voltage are known is R = I/V.

Ohm's law describes how current is related to voltage and resistance.

Total power in a parallel circuit is found by adding up the power of all the individual resistors.

The ampere is the unit of resistance.

The circuit phase angle is the angle between the total current and the applied (source) voltage.

In a series circuit, the individual powers are additive.

The atomic number is the number of neutrons in the nucleus.

The nominal value of a brown, black, yellow, and gold resistor is 100,000 ohms.

An ammeter is connected across the current path.

A potentiometer is a two-terminal variable resistor.

Apparent power is expressed in watts.

Total current in an RC circuit always leads the source voltage.

Positive numbers can be represented by points to the right of the origin on the horizontal axis of a graph.

The capacitor voltage always leads the current by 90 .

The impedance of a series RC circuit varies directly with frequency.

An imaginary number is one that exists only in the mind of the mathematician.

The resistor voltage is always out of phase with the current.

The node voltage method is based on Kirchhoff's voltage law.

A loop current is an actual current in a branch.

The mesh current method is based on Kirchhoff's current law.

The branch current method is based on Kirchhoff's voltage law and Kirchhoff's current law.

The total resistance of a series circuit is equal to the difference between the largest and smallest value resistors.

The voltage at one point in a circuit is always measured relative to another point.

When assigning branch currents, you need not be concerned with the direction you choose.

The sum of the currents into a junction is equal to the sum of the currents out of that junction.

When an open circuit occurs in a parallel branch, the total resistance decreases.

Parallel resistors are connected between the same two points.

The number of current paths equals the number of resistors in parallel.

A complex number represents a phasor quantity.

Complex numbers can be added and subtracted but not multiplied or divided.

The term choke is more commonly used in connection with an inductor used to block off high frequencies.

The power factor (PF) indicates how much of the apparent power is true power.

All coil cores are made of iron.

Inductors add in parallel.

Energy is stored by an inductor in an electrostatic field.

In an RC circuit, the impedance is determined by both the resistance and the capacitive reactance combined.

The polar form of a complex number consists of a real part and a j part.

The term squirrel-cage applies to a type of three-phase ac generator.

A simple two-phase generator consists of two conductive loops separated by 90 , rotating in a magnetic field.

An alternator is an electromechanical ac generator.

The stator is the rotating assembly in a generator or motor.

An induced voltage is produced as a result of a dc voltage.

X_L is directly proportional to frequency and inductance.

The permeability of a core material is an indication of the ability of the material to establish a magnetic field.

Inductance is the property of an inductor that produces an opposition to any change in current.

Resonance is a condition in a series RLC circuit in which the capacitive and inductive reactances are equal in magnitude.

In a Y-connected generator, there is a 120 difference between each line voltage and the nearest phase voltage.

In a series RLC circuit, the larger reactance determines the net reactance of the circuit.

In a parallel RLC circuit, the smaller reactance determines the net reactance of the circuit.