Experiment 11: Questions

[ purpose | theory I | theory II | procedure ]

Questions:

• 1. What is the significance of the phase angle (or ) in equation (1)?

• 2. How does a larger value of R affect the resonance curve of procedure 7 ?

• 3. Over what frequency interval is the value of ? From equation (3) , and , thus is the condition required for Z less than or equal to 2R. Setting Z² = X² + R_T² = 4R² for a limit,

  

  which defines R_e . This gives

  

  or

  

  and

The solution to this quadratic gives the limiting values of . Compare these values with those found from the graph of I_o vs .

[ purpose | theory I | theory II | procedure | questions ]