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What is the approximate value of the phase angle and draw a


1. What is the approximate value of the phase angle between Vd and V'd in Fig.? Consider the collector voltage of Q1 to be the reference voltage. Draw a phasor diagram for both Vd and Vs.

(1) 0° (3) 60° (5) 90°
(2) 45° (4) 70°

1155_Approximate value of the phase angle.png

2. What effect will Increasing the value of R1 have on the phase difference between Vi and V'd in Fig.?

(1) None.

(2) The phase angle will increase.

(3) The phase angle will decrease.

1705_Approximate value of the phase angle1.png

3. What value of I? in Fig. will give a phase angle of 24° between 4, and 4? (Hint: tan 24° = 4 /I„)

(1) 27 (3) 82 Q (5) 128 11

(2) 50 52 (4) 115 St (6) 135


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