Electrical Measurements and Tools MCQs January 8, 2026November 19, 2024 by u930973931_answers 20 min Score: 0 Attempted: 0/20 Subscribe 1. The unit of electric current is: (A) Volt (B) Ohm (C) Ampere (D) Watt 2. Which instrument is used to measure electric current? (A) Voltmeter (B) Ohmmeter (C) Ammeter (D) Wattmeter 3. The unit of electric voltage is: (A) Ampere (B) Ohm (C) Volt (D) Joule 4. A voltmeter is connected in which manner in a circuit? (A) In parallel (B) In series (C) In both series and parallel (D) None of the above 5. Which of the following is the unit of electrical resistance? (A) Ampere (B) Volt (C) Ohm (D) Watt 6. An ohmmeter is used to measure: (A) Voltage (B) Current (C) Resistance (D) Power 7. A wattmeter is used to measure: (A) Voltage (B) Current (C) Power (D) Frequency 8. A digital multimeter (DMM) can measure which of the following? (A) Voltage (B) All of the above (C) Resistance (D) Current 9. The instrument used to measure the power consumption of an electric device is called a: (A) Ammeter (B) Wattmeter (C) Voltmeter (D) Multimeter 10. The principle of operation of an ammeter is based on: (A) Kirchhoff’s law (B) Ohm’s law (C) Faraday’s law (D) Electromagnetic induction 11. Which of the following tools is used to strip the insulation from wires? (A) Wire cutter (B) Wire stripper (C) Soldering iron (D) Clamp meter 12. A soldering iron is primarily used to: (A) Connect wires by melting solder (B) Cut wires (C) Measure voltage (D) Tighten screws 13. A clamp meter is used to measure: (A) Voltage (B) Current (C) Resistance (D) Power 14. The instrument used to measure the frequency of an electrical signal is called a: (A) Oscilloscope (B) Frequency counter (C) Multimeter (D) Clamp meter 15. The purpose of a fuse in an electrical circuit is to: (A) Reduce voltage (B) Protect the circuit from high current (C) Measure resistance (D) Conduct current 16. The primary function of an oscilloscope is to: (A) Display electrical waveforms (B) Measure current (C) Measure resistance (D) Measure voltage 17. A test light is used to: (A) Measure resistance (B) Measure voltage (C) Test the continuity of a circuit (D) Test for current flow 18. An RCD (Residual Current Device) is used to: (A) Measure current (B) Stabilize voltage (C) Measure voltage (D) Disconnect power in case of leakage current 19. The tool used to tighten or loosen electrical terminals is called a: (A) Pliers (B) Screwdriver (C) Wrench (D) Clamp 20. A megohmmeter is used to measure: (A) Current (B) High resistance (C) Power (D) Low resistance