AC Cir

Quiz
•
Physics
•
Professional Development
•
Hard
Standards-aligned
Charles Martinez
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
How the low power factor (P.F) can be improve in AC circuit?
By connecting resistance in series.
By connecting capacitor in series.
By connecting inductor in series
By connecting capacitor in parallel
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the resistance of the inductive coil takes 5 A current across 240V, 50 Hz supply at 0.8 power factor?
48 Ohm
42.5 Ohm
38.4 Ohm
26.6 Ohm
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Calculate the impedance of the circuit,
R = 5 Ohm, XL = 36 Ohm, XC = 24 Ohm
69 Ohm
65 Ohm
13 Ohm
12 Ohm
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the line voltage in 3 phase system if the phase voltage is 240V ?
380 Volt
400 Volt
415 Volt
440 Volt
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
In which 3 phase system, the artificial neutral is required to measure the phase voltage?
3 wire star connected system
4 wire star connected system
3 wire delta connected system
4 wire delta connected system
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Calculate the power by two wattmeter (W1 & W2) method, if one of the wattmeter (W2) reading is taken after reversing.
W1 * 2
W1 only
W1 - W2
W1 + W2
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What relationship is illustrated in between the current and voltage?
Current and voltage are "in phase"
Current and voltage are in out of phase
Current lags behind the voltage
Current leads ahead of the voltage
Tags
NGSS.HS-PS4-1
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