#1 True or false The Ac voltage across a capacitor will be leading the AC curren

Question

#1 True or false The Ac voltage across a capacitor will be leading the AC current to/from the capacitor.
#2 What is the u it commonly associate with reactive power?
#3 A 20 ohm capacitive reactance is connected in series to a 40 ohm inductive reactance. The total reactance will be A) 60 ohm capacitive B) 60 ohm inductive C) 20 ohm capacitive D) 20 ohm inductive
#1 True or false The Ac voltage across a capacitor will be leading the AC current to/from the capacitor.
#2 What is the u it commonly associate with reactive power?
#3 A 20 ohm capacitive reactance is connected in series to a 40 ohm inductive reactance. The total reactance will be A) 60 ohm capacitive B) 60 ohm inductive C) 20 ohm capacitive D) 20 ohm inductive
True or false The Ac voltage across a capacitor will be leading the AC current to/from the capacitor.
#2 What is the u it commonly associate with reactive power? The Ac voltage across a capacitor will be leading the AC current to/from the capacitor.
#2 What is the u it commonly associate with reactive power?
#3 A 20 ohm capacitive reactance is connected in series to a 40 ohm inductive reactance. The total reactance will be A) 60 ohm capacitive B) 60 ohm inductive C) 20 ohm capacitive D) 20 ohm inductive

Explanation / Answer

1. FALSE.

Explanation: In a Capacitor, Current leads volatge by 90 degrees. or Voltage lags current by 90 degrees.

2. Unit associated with reactive power is VAR

3. In phasor notation, capacitive reactace = -j20 Ohms

Inductive reactance = j40 ohms

So, Total reactance when they connected in series = -j20+j40 = j20 ohms

As the total reactance is positive, it is Inductive reactance.

So, answer is Option D, 20 ohms Inductive

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