NEET Physics: Alternating Currents — MCQ Test 19

Q6. A transformer has \( N_p = 600 \), \( N_s = 1200 \). If \( V_s = 480 \, \text{V} \) (rms), what is the primary voltage?

Q7. In an AC circuit with a pure inductor, why is the average power dissipated zero over a complete cycle?

Q8. A \( 190 \, \text{V} \) (rms) source supplies a \( 95 \, \Omega \) resistor. What is the peak current?

Q9. A series LCR circuit with \( R = 110 \, \Omega \), \( X_L = 140 \, \Omega \), \( X_C = 80 \, \Omega \) has a \( 330 \, \text{V} \) (rms) source. What is the power dissipated?

Q10. A \( 95 \, \text{mH} \) inductor is connected to a \( 220 \, \text{V} \), \( 50 \, \text{Hz} \) source. What is the peak current?

NEET Physics — Alternating Currents

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A transformer has \( N_p = 250 \), \( N_s = 500 \). If \( V_s = 440 \, \text{V} \) (rms), what is the primary voltage?

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Physics preparation, focusing specifically on the chapter Alternating Currents. It contains 10 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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10
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Key concepts covered in this specific test include Transformer, Impedance, Determining, Resonant, Frequency, and Supplies.

Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.

Preview of Questions in this Test

Q1. A transformer has \( N_p = 250 \), \( N_s = 500 \). If \( V_s = 440 \, \text{V} \) (rms), what is the primary voltage?

  • A. 200 V
  • B. 210 V
  • C. 230 V
  • D. 220 V

Q2. A series LCR circuit has \( R = 15 \, \Omega \), \( X_L = 30 \, \Omega \), \( X_C = 45 \, \Omega \). What is the phase angle?

  • A. 40°
  • B. 42°
  • C. 45°
  • D. 50°

Q3. A series LCR circuit has \( R = 120 \, \Omega \), \( X_L = 100 \, \Omega \), \( X_C = 80 \, \Omega \). What is the impedance?

  • A. 120 Ω
  • B. 121.66 Ω
  • C. 125 Ω
  • D. 130 Ω

Q4. What is the primary factor determining the resonant frequency in a series LCR circuit?

  • A. Resistance of the circuit
  • B. Values of inductance and capacitance
  • C. Voltage of the source
  • D. Current in the circuit

Q5. A \( 175 \, \text{V} \) (rms) AC source supplies a \( 35 \, \Omega \) resistor. What is the average power consumed?

  • A. 850 W
  • B. 875 W
  • C. 900 W
  • D. 925 W

+ 5 more questions in the actual test

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