Exp no 1 : Use of multi-meter to measure voltage and frequency of ac supply.

Aim : Use of multi-meter to measure voltage and frequency of ac supply.

Apparatus : Digital Multimeter,

Cods for measurement 

Formula : f = 1/T

                     V = IR

Diagram: 

Procedure : 

1. How to measure ac voltage

• Turn the dial to ṽ. Some digital multimeters (DMMs) also include m ṽ . ...
• First insert the black lead into the COM jack.
• Next insert the red lead into the VΩ jack. ...
• Connect the test leads to the circuit: black lead first, red second. ...
• Read the measurement in the display.

2. Digital multimeters with a frequency button

• Turn the dial to ac voltage (AC Voltage indicator).
• First insert the black test lead into the COM jack.
• Then insert the red lead into the V Ω jack.
• Connect the test leads to the circuit. ...
• Read the voltage measurement in the display.
• Result: Ac voltage = 
•     Frequency of ac =