⚡ Electrical Engineering Solved MCQs with Answers

Practice 757 approved ⚡ Electrical Engineering questions with verified answers from the 🛠️ Engineering Essentials subject for Pakistan exams.

757 solved MCQs

When these numbers are multiplied, (6 × 10³) (5 × 10⁵), the result isAnswer: 30 × 10⁸ Resistance is measured inAnswer: ohms Resistance is measured inAnswer: ohms The number 65,000 expressed in scientific notation as a number between 1 and 10 times a power of ten isAnswer: 6.5 × 10⁴ When converting 7,000 nA to microamperes, the result isAnswer: 7 µA The number of kilowatts in 135 milliwatts isAnswer: 1.35 × 10⁻⁴ kW The number 4.4 × 10⁶ ohms expressed using a metric prefix isAnswer: 4.4 M The number of microamperes in 2 milliamperes isAnswer: 2,000 µA The number of millivolts in 0.06 kilovolts isAnswer: 60,000 mV Eighteen thousand watts is the same asAnswer: 18 kW The number 3.2 × 10⁻⁵ A expressed using a metric prefix isAnswer: 32 µA When converting 0.16 mA to microamperes, the result isAnswer: 160 µA When these numbers are added, (87 × 10⁵) + (2.5 × 10⁶), the result isAnswer: 112 × 10⁵ The quantity 3.3 × 10³ is the same asAnswer: 3,300 Which of the following is not an electrical quantity?Answer: distance Seven thousand volts can be expressed asAnswer: 7 kV The number 4,500,000 can be expressed asAnswer: 4.5 × 10⁶ When converting 1,600 kilohms to megohms, the result isAnswer: 1.6 M Ω What is (79 × 10⁶)/(12 × 10⁻⁸)?Answer: 6.58 × 10¹⁴ Fourteen milliamperes can be expressed asAnswer: 14 mA The number 4.38 × 10⁻³ expressed as a number having a power of 10⁻⁶ isAnswer: 4,380 × 10⁻⁶ Voltage is measured inAnswer: volts The number 0.0003 multiplied by 10-3 isAnswer: 0.0000003 The number of megohms in 0.03 kilohms isAnswer: 3 × 10⁻⁵ M Ω The quantity 43 × 10⁻³ is the same asAnswer: 0.043 Current is measured inAnswer: amperes Materials with lots of free electrons are calledAnswer: conductors The unit of electrical charge is theAnswer: coulomb Current flows in a circuit whenAnswer: a switch is closed The minimum resistance value for a blue, gray, red, silver resistor isAnswer: 6,120 Ω