Question 162Electricity/Electronics - QMED70% to pass
Which of the following precautions should be taken when troubleshooting various power circuits using a digital multimeter?
AI Explanation
The correct answer is D) When in the manual ranging mode, always pre-set the meter to the next higher range than the amount of voltage expected in the circuit.
This is the correct answer because when using a digital multimeter in manual ranging mode, it is important to set the meter to the next higher range than the expected voltage in the circuit. This helps prevent damage to the meter's internal components from an unexpectedly high voltage. Using the wrong range can overload the meter and potentially cause it to malfunction or even be permanently damaged.
The other options are incorrect. Option A is incorrect because digital multimeters are capable of measuring voltages up to several kilohertz. Option B is incorrect because modern digital multimeters are designed to withstand voltages up to several hundred volts. Option C is incorrect because digital multimeters are generally not polarity sensitive and reversing the leads will not result in high temperatures within the tester.
Related Questions
#160 In troubleshooting a circuit in a console, you find that a resistor may be faulty. Which of the precautions listed must be observed when using an analog or digital multimeter set up as an ohmmeter to carry out this test? #161 If a digital multimeter set up to measure AC volts reads slightly above 'zero' when its leads are disconnected, what is this a result of? #163 Circuit resistance is usually measured off-line (de-energized) with an ohmmeter. In the absence of an ohmmeter, however, resistance may be INDIRECTLY measured on-line (energized) using what meter (or meters)? #164 Whether analog or digital, what are most AC voltmeters calibrated to measure? #165 Which of the meters listed should only be used after a circuit has been electrically de-energized?