AET (NCATT) 451-500 Answered
Questions (Latest 2026)
451) What is the power factor in an RL circuit having a 30-
degree phase angle between the voltage and current? -
Correct Answers ✅0.866
452) In a circuit where the AC voltage and current are out of
phase, how can true power be determined? - Correct
Answers ✅Multiply apparent power times the power factor.
453) If a resistance to which a constant voltage is applied is
cut in half, what power dissipation will result? - Correct
Answers ✅Double.
454) What is the power factor in a RL circuit having a 60-
degree phase angle between the voltage and the current? -
Correct Answers ✅0.5
455) What value series resistor is needed to obtain full scale
deflection on a 50 microamp DC meter with 200 VDC applied?
- Correct Answers ✅4 Mega ohms
456) Which of the following Ohms Law formulas is incorrect? -
Correct Answers ✅I=R/E
457) If 2A flows through a 50Ω resistor, what is the voltage
(drop) across the resistor? - Correct Answers ✅100V.
, AET (NCATT) 451-500 Answered
Questions (Latest 2026)
458) If a 100Ω resistor is connected across 200V, what is the
current through the resistor? - Correct Answers ✅2A.
459) If 3A flows through a resistor connected to 90V, what is
the resistance? - Correct Answers ✅30 ohms.
460) A relay coil has 500Ω resistance and operates on
125mA. What value resistor should be connected in series
with it to operate from a 110 VDC source? - Correct
Answers ✅380 ohms.
461) What is the time constant of a series circuit with a
100µF capacitor and a 470kΩ resistor? - Correct Answers
✅47 seconds.
462) What is the time constant of a series circuit with two
100µF capacitor and a 470kΩ resistor? - Correct Answers
✅47 seconds.
463) What is the time constant of a parallel circuit with a
220µF capacitor and a 1 Mega ohm resistor? - Correct
Answers ✅220 seconds.
464) What is the time constant of a series circuit with two
220µF capacitors and two 1MΩ resistors? - Correct Answers
✅220 seconds.
Questions (Latest 2026)
451) What is the power factor in an RL circuit having a 30-
degree phase angle between the voltage and current? -
Correct Answers ✅0.866
452) In a circuit where the AC voltage and current are out of
phase, how can true power be determined? - Correct
Answers ✅Multiply apparent power times the power factor.
453) If a resistance to which a constant voltage is applied is
cut in half, what power dissipation will result? - Correct
Answers ✅Double.
454) What is the power factor in a RL circuit having a 60-
degree phase angle between the voltage and the current? -
Correct Answers ✅0.5
455) What value series resistor is needed to obtain full scale
deflection on a 50 microamp DC meter with 200 VDC applied?
- Correct Answers ✅4 Mega ohms
456) Which of the following Ohms Law formulas is incorrect? -
Correct Answers ✅I=R/E
457) If 2A flows through a 50Ω resistor, what is the voltage
(drop) across the resistor? - Correct Answers ✅100V.
, AET (NCATT) 451-500 Answered
Questions (Latest 2026)
458) If a 100Ω resistor is connected across 200V, what is the
current through the resistor? - Correct Answers ✅2A.
459) If 3A flows through a resistor connected to 90V, what is
the resistance? - Correct Answers ✅30 ohms.
460) A relay coil has 500Ω resistance and operates on
125mA. What value resistor should be connected in series
with it to operate from a 110 VDC source? - Correct
Answers ✅380 ohms.
461) What is the time constant of a series circuit with a
100µF capacitor and a 470kΩ resistor? - Correct Answers
✅47 seconds.
462) What is the time constant of a series circuit with two
100µF capacitor and a 470kΩ resistor? - Correct Answers
✅47 seconds.
463) What is the time constant of a parallel circuit with a
220µF capacitor and a 1 Mega ohm resistor? - Correct
Answers ✅220 seconds.
464) What is the time constant of a series circuit with two
220µF capacitors and two 1MΩ resistors? - Correct Answers
✅220 seconds.
