Page 120 - CITS - Electrician - Trade Practical
P. 120

ELECTRICIAN - CITS



           7  Take the multi meter and check its range of voltage, current, resistance and other parameters.

           8  Measure the resistance of rheostat, continuity of coil, supply voltage and current in the circuit with multi meter.
                                         Table for details of Basic Electrical meter
            Sl.No     Name of the meter   Symbol             Connection            Application
                                                             Type

            1         Ammeter                                In series with load   Ammeter is used to measure
                                                             only                  the current
            2         Voltmeter                              In parallel with supply   Voltmeter is used to
                                                             OR load               measure the voltage
            3         Wattmeter                              Series & parallel with   Wattmeter is used to
                                                             load & supply         measure the power
            4         Frequency meter                        In parallel with supply  It is used measure supply
                                                                                   frequency
            5         PF meter                               Series & parallel with   It is used to measure power
                                                             load & supply         factor in AC
            6         Multi meter                            Series & parallel with   It is used to measure
                                                             load & supply         voltage, current, resistance,
                                                                                   continuity etc






















           Safety precautions:
           1  Handle carefully and do not drop the Electrical meters.

           2  Never connect the ammeter in parallel.
           3  Check the current & voltage range of meters before connecting to supply.
           4  Always set the multi meter at high voltage range while testing AC supply.






















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                                    CITS : Power - Electrician & Wireman - Exercise 50
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