B
Banjo
Hi
Just wondering if somebody could help me out with some questions I'm struggling with and show your workings out to
Q1) A transformer has an output of 12KVA and a power factor of 0.9, the total losses in the transformer are 600w, what is the efficiency of the transformer?
A) 96.4%
B) 92.4%
C) 94.4%
D) 94.6%
Q2) If a current of 200ma flows into a capacitor for 40ms, how much charge will develop in the capacitor?
A) 0.8mc
B)16mc
C)8mc
D)18mc
Q3) Calculate the induced EMF in a conductor with a length of 0.65m moving at right angles at a velocity of 2m/s through a magnetic field that has a flux density of 0.9 Tesla?
A) 1.17v
B) 2.34v
C) 23.4v
D) 11.7v
Cheers Stu
Just wondering if somebody could help me out with some questions I'm struggling with and show your workings out to
Q1) A transformer has an output of 12KVA and a power factor of 0.9, the total losses in the transformer are 600w, what is the efficiency of the transformer?
A) 96.4%
B) 92.4%
C) 94.4%
D) 94.6%
Q2) If a current of 200ma flows into a capacitor for 40ms, how much charge will develop in the capacitor?
A) 0.8mc
B)16mc
C)8mc
D)18mc
Q3) Calculate the induced EMF in a conductor with a length of 0.65m moving at right angles at a velocity of 2m/s through a magnetic field that has a flux density of 0.9 Tesla?
A) 1.17v
B) 2.34v
C) 23.4v
D) 11.7v
Cheers Stu
