Electrical_Measuring_Devices_Quiz.pdf

Quiz: History of Electrical Measuring Devices 5 Enumeration Questions: 1. Enumerate the basic components of a multimeter. Answer: - Display - Selector switch - Probes - Input jacks - Battery 2. List three types of multimeters. Answer: - Analog multimeter - Digital m...

Quiz: History of Electrical Measuring Devices 5 Enumeration Questions: 1. Enumerate the basic components of a multimeter. Answer: - Display - Selector switch - Probes - Input jacks - Battery 2. List three types of multimeters. Answer: - Analog multimeter - Digital multimeter (DMM) - Clamp multimeter 3. Enumerate the main functions of an ammeter. Answer: - Measures electric current - Can measure both AC and DC currents - Connected in series - Uses low internal resistance - Includes a protective fuse 4. List the types of voltmeters. Answer: - Analog voltmeter - Digital voltmeter - Moving iron voltmeter - Rectifier voltmeter - Electro-dynamometer voltmeter 5. Mention three types of specialized ammeters based on current range. Answer: - Microammeter - Milliammeter - Ampere-hour meter 20 Multiple Choice Questions: 1. Who is credited with inventing the first multimeter? a) Nikola Tesla b) Thomas Edison c) Donald Macadie d) James Clerk Maxwell Answer: c) Donald Macadie 2. What device is considered the earliest predecessor of the multimeter? a) Ammeter b) Ohmmeter c) Voltmeter d) Galvanometer Answer: d) Galvanometer 3. The first multimeter was designed to measure: a) Voltage, resistance, and current b) Current only c) Voltage and current d) Resistance only Answer: a) Voltage, resistance, and current 4. The AVOmeter was introduced to measure: a) Volts, Amperes, and Ohms b) Watts, Volts, and Current c) Resistance and Inductance d) Power, Frequency, and Voltage Answer: a) Volts, Amperes, and Ohms 20 True or False Questions: 1. The first multimeter was invented by Donald Macadie in 1920. Answer: True 2. The AVOmeter can measure only alternating current (AC). Answer: False 3. An analog voltmeter is used to measure both AC and DC voltages. Answer: True 4. Voltmeters must be connected in series with the device being tested. Answer: False 5. The internal resistance of a voltmeter is high to prevent current from flowing through it. Answer: True 20 Identification Questions: 1. Identify the device used to measure the electrical potential difference between two points in a circuit. Answer: Voltmeter 2. What device was the earliest predecessor of the multimeter, invented in 1820? Answer: Galvanometer 3. What is the primary function of an ammeter? Answer: To measure electric current 4. Who invented the first multimeter? Answer: Donald Macadie 5. Identify the device that can measure resistance, voltage, and current. Answer: Multimeter