#### Basic Electrical - Electrical Engineering

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Basic Electrical Engineering MCQ. Engineering Technical, Basic Electrical, one joule per second is, Filters are used to Convert.

- Direction only
- Magnitude only
- Both Magnitude & Direction
- None of these

**Question 1:** A current is said to be alternating when it changes in?

**Answers:** Both Magnitude & Direction

- Sinusoid of the same Frequency
- Non-sinusoid
- Sinusoid of half the original Frequency
- sinusoid of double the original frequency

**Question 2:** If 2 sinusoidal of the same frequency but of different amplitudes and phase difference are added, the resultant is a?

**Answers:** Sinusoid of the same Frequency

- 2,500 watts
- 1,200 Watts
- 3,600 Watts
- 2,880 Watts

**Question 3:**A 240V single-phase ac source is connected to a load with an impedance of 10 2. A capacitor is connected in parallel with the load. If the capacitor supplies 1,250 VAR, the Real power supplied by the source is:

**Answers:** 2,880 Watts

- 1 Resistance in parallel with 1H inductance
- 12 Resistance in series with 1F capacitor
- 12 resistance in parallel with 1F capacitor
- 1 Resistance

**Question 4:**A source of angular frequency 1 rad/sec has a source impedance consisting of 1 resistance in series with 1H inductance. The load that will obtain the maximum power transfer is?

**Answers:** 12 Resistance in series with 1F capacitor

- RMS Phase voltage
- Peak Line-to-Line Voltage
- RMS Line-to-Line Voltage
- Peak phase voltage

**Question 5:** The rated voltage of a 3-phase power system is given as?

**Answers:** RMS Line-to-Line Voltage

- Resistance
- Impedance
- Power Factor
- All of these

**Question 6:** For a 3-phase Load balanced condition, each phase has the same value of?

**Answers:** All of these

- P
- P/3
- 3P
- 4P

**Question 7:** A 3-phase Delta-connected symmetrical load consumes P watts of power from a balanced supply. If the same load is connected in star to the same supply, then what is the power consumption?

**Answers:** P/3

- 100/3
- 600/3
- 200/3
- 400/3

**Question 8:** 2 resistors of equal values are connected series across the lines B and C of a symmetrical 3-phase, 400V system. What is the magnitude of the voltage between the line A and the junction of resistors?

**Answers:** 200/3

- 12VA
- 6VA
- 30VA
- 40VA

**Question 9:** If a load is purely inductive and the reactive power is 12 VAR, the apparent power is?

**Answers:** 12VA

- 25.25V
- 20.50V
- 30.20V
- 17.49V

**Question 10:**In a Series RL circuit, 9 V RMS is measured across the Resistor, and 15V rms is measured across the inductor. The peak value of the source voltage is?

**Answers:** 17.49V

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**Total Questions Attempted: **0

**Correct: **0 **Wrong: **0

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