EE PREBOARDS 2

A visually appealing illustration of electrical engineering concepts such as circuit breakers, transistors, and voltage measurements in a modern and educational style.

EE Preboards 2: Electrical Engineering Knowledge Check

Test your knowledge of electrical engineering concepts with our EE Preboards 2 quiz! This comprehensive quiz includes 25 multiple-choice questions designed to challenge your understanding of various topics in the field.

Whether you're a student preparing for exams or a professional seeking to refresh your knowledge, this quiz is perfect for you!

25 Engaging Questions
Multiple Choice Format
Instant Scoring

25 Questions6 MinutesCreated by TestingKnowledge42

In air blast circuit breakers, the pressure of air is of the order of ___.

20 to 30 kg/sq.cm

3 to 5 kg/sq.cm

100 mmHg

1 kg/sq.cm

In kitchens, pantries, breakfast rooms, dining rooms, and the likes, a receptacle outlet shall be installed at each wall countertop and work surface that is ___ mm or wider. Receptacle outlets shall be installed so that no point along the wall line is more than ___ mm measured horizontally from a receptacle outlet in that space.

450,600

450,300

300,600

300,450

What is an electron volt?

The energy gained by an electron in moving through a potential difference of 1 volt.

The energy needed to move an electron through 1 meter in any electric field.

The force acting on an electron in a field of 1 N/C.

The force required to move an electron 1 meter.

Which of the following statement is CORRECT concerning electric field?

A charged point particle released from the rest moves along a field line.

Electric field point away from a negatively charged particle.

Electric field lines may cross.

Electric fields are closed together where the field is large.

The direction of induced EMF can be found by ______.

Kirchhoff`s Law

Fleming`s Right Hand Rule

Fleming`s Left Hand Rule

Lenz`s Law

For precision work, the illumination level required is of order of

200 – 400 lumen/m²

50 – 100 lumen/m²

10 – 25 lumen/m²

500 – 1000 lumen/m²

To reverse the direction of rotation of a three-phase induction motor, it is necessary to:

Increase the resistance of the rotor circuit

Interchange all the three-line connections

Reverse the polarity of the rotor circuit

Interchange any two of the three-line connections

What is the rms value of an AC current?

That steady current that will charge a battery at the same rate with the actual current

The steady current that produces the same rate of heating in a resistor as the actual current.

Its average value.

Its peak value.

In a dwelling unit, floor receptacle/outlets shall not be counted as part of the required receptacle outlets unless located within ____ mm of the wall.

450

1800

600

1600

In the solution of load flow equation, Newton-Raphson (NR) method is superior to the Gauss-Seidel (GS) method, because the:

Number of iterations required is not independent of the size of the system in the NR method

Convergence characteristic of the NR methods are not affected by selection of slack bus.

Time taken to perform one iteration in the NR method is less compared to the time taken in GS method.

Number of iterations required on the NR is more than compared to that in the GS method.

An alternator running in parallel with the other alternators all having automatic voltage regulators is to be taken off the bus. The usual procedure before opening the switch is to ______.

Reduce alternator excitation

Increase alternator excitation

Do nothing

Reduce the power fed to the prime mover

For two alternators operating in parallel, if the load shared by one of the alternators is to be increased, the field excitation is ________.

To be kept constant but input torque should be increased

To be kept constant but input torque should be decreased

To be strengthened keeping input torque the same

To be weakened keeping input torque the same

The breakdown mechanism in a lightly doped p-n junction under reverse biased condition is called:

Zener breakdown

Breakdown by tunnelling

High voltage breakdown

Avalanche breakdown

Which of the following is not a method of measuring the slip of an induction motor?

Stroboscopic method

Measurement of rotor frequency

Magnetizing method

Actual measurement of rotor speed

What type of front must be for panelboard enclosures?

Live front

Gray-colored front with yellow stripes

Dead front

Gray-colored front

Which of the following AC device is used to measure the angle between the voltage and its current?

Power factor meter

Reactive meter

Demand meter

Phase angle meter

When is the transposition of conductors in a transmission line done?

When ACSR conductor is used in transmission line

When a telephone line runs parallel to the power line

When the conductors are spaced equilaterally

When the conductors are not equally spaced

What does IEMOP stand for?

Independent Electricity Market Operator of the Philippines

Integrated Energy Market Operator of the Philippines

Integrated Electricity Market Operator of the Philippines

Independent Energy Market Operator of the Philippines

The thickness of insulation provided on the conductor in the cable depends on which among the following factors?

Current to be carried

Power to be carried

Operating voltage

Power factor

Two particles with charges Q and –Q are fixed at the vertices of an equilateral triangle with sides of length α If k = 1/4πє₀, the work required to move a particle with charge q from the other vertex to the center of the line joining the fixed particles is:

KQq/α

2kQq/α

KQq/α²

EE PREBOARDS 2

EE Preboards 2: Electrical Engineering Knowledge Check

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