Author: Study Clue

What is the function of a frequency meter in a power system? A Measure current B Measure resistance C Measure

Which transformer isolates and steps down current for measurement? A Current transformer (CT) B Potential transformer (PT) C Step-up transformer

Which device is used to step down high voltage in a system? A Ammeter B Potential transformer C Multimeter D

Which device is used to measure electrical resistance? A Wattmeter B Ammeter C Ohmmeter D Voltmeter Explanation An ohmmeter measures

What is the primary purpose of an electrical measuring instrument? A Generate power B Display voltage C Store data D

What is the primary principle behind Ohm’s law? A Voltage equals current times resistance B Current equals resistance times voltage

What is the purpose of an electrical filter in a circuit? A Remove unwanted frequencies B Store energy C Control

What is the primary function of a transformer in a circuit? A Voltage conversion B Current conversion C Power factor

How does inductance affect impedance in an AC circuit? A Increases with frequency B Zero at high frequency C Decreases

How is total current determined in a parallel circuit? A Min current B Average current C Sum of currents D