Select Question Set:

In an ideal transformer, the turns ratio is \(\cfrac{N_p}{N_s}=\cfrac{1}{2} .\) The ratio \(V_s:V_p\) is equal to (the symbols carry their usual meaning):

1. | \(2:1\) | 2. | \(1:1\) |

3. | \(1:4\) | 4. | \(1:2\) |

Subtopic: Transformer |

63%

From NCERT

NEET - 2024

Please attempt this question first.

Hints

Please attempt this question first.

A \(10~\mu\text F\) capacitor is connected to a \(210~\text V,50~\text{Hz}\) source as shown in the figure. The peak current in the circuit is nearly \((\pi = 3.14)\):

1. \(0.93~\text A\)

2. \(1.20~\text A\)

3. \(0.35~\text A\)

4. \(0.58~\text A\)

1. \(0.93~\text A\)

2. \(1.20~\text A\)

3. \(0.35~\text A\)

4. \(0.58~\text A\)

Subtopic: RMS & Average Values |

52%

From NCERT

NEET - 2024

Please attempt this question first.

Hints

Please attempt this question first.

\(L,C\) and \(R\) represent the value of inductance, capacitance and resistance, respectively. The factor which has the same dimensions as that of the inverse of resonance frequency is:

1. \(\sqrt{LC}\)

2. \(\sqrt{\dfrac{L}{C}}\)

3. \(\dfrac{C}{L}\)

4. \(\dfrac{R}{L}\)

1. \(\sqrt{LC}\)

2. \(\sqrt{\dfrac{L}{C}}\)

3. \(\dfrac{C}{L}\)

4. \(\dfrac{R}{L}\)

Subtopic: Different Types of AC Circuits |

74%

From NCERT

NEET - 2024

Please attempt this question first.

Hints

Please attempt this question first.

An ac source is connected to a capacitor \(C\). Due to decrease in its operating frequency:

1. capacitive reactance remains constant

2. capacitive reactance decreases.

3. displacement current increases.

4. displacement current decreases.

1. capacitive reactance remains constant

2. capacitive reactance decreases.

3. displacement current increases.

4. displacement current decreases.

Subtopic: Different Types of AC Circuits |

From NCERT

NEET - 2023

Please attempt this question first.

Hints

Please attempt this question first.

A \(12~\text{V},60~\text{W}\) lamp is connected to the secondary of a step down transformer, whose primary is connected to ac mains of \(220~\text{V}\). Assuming the transformer to be ideal, what is the current in the primary winding?

1. \(0.37~\text{A}\)

2. \(0.27~\text{A}\)

3. \(2.7~\text{A}\)

4. \(3.7~\text{A}\)

1. \(0.37~\text{A}\)

2. \(0.27~\text{A}\)

3. \(2.7~\text{A}\)

4. \(3.7~\text{A}\)

Subtopic: Transformer |

68%

From NCERT

NEET - 2023

Please attempt this question first.

Hints

Please attempt this question first.

In a series \({LCR}\) circuit, the inductance \({L}\) is \(10~\text{mH}\), capacitance \({C}\) is \(1~\mu\text{F}\) and resistance \({R}\) is \(100~\Omega\). The frequency at which resonance occurs is:

1. | \(1.59~\text{kHz}\) | 2. | \(15.9~\text{rad/s}\) |

3. | \(15.9~\text{kHz}\) | 4. | \(1.59~\text{rad/s}\) |

Subtopic: Different Types of AC Circuits |

61%

From NCERT

NEET - 2023

Please attempt this question first.

Hints

Please attempt this question first.

The net impedance of circuit (as shown in the figure) will be:

1. \(25~\Omega\)

2. \(10\sqrt{2}~\Omega\)

3. \(15~\Omega\)

4. \(5\sqrt{5}~\Omega\)

1. \(25~\Omega\)

2. \(10\sqrt{2}~\Omega\)

3. \(15~\Omega\)

4. \(5\sqrt{5}~\Omega\)

Subtopic: Different Types of AC Circuits |

59%

From NCERT

NEET - 2023

Please attempt this question first.

Hints

Please attempt this question first.

An AC source is connected to the given circuit. The value of \(\phi\) will be:

1. | \(60^\circ\) | 2. | \(90^\circ\) |

3. | \(30^\circ\) | 4. | \(45^\circ\) |

Subtopic: Different Types of AC Circuits |

63%

From NCERT

NEET - 2023

Please attempt this question first.

Hints

Please attempt this question first.

If \(Z_1\) and \(Z_2\) are the impedances of the given circuits (a) and (b) as shown in figures, then choose the correct option:

1. | \(Z_1<Z_2\) | 2. | \(Z_1+Z_2=20~\Omega\) |

3. | \(Z_1=Z_2\) | 4. | \(Z_1>Z_2\) |

Subtopic: Different Types of AC Circuits |

61%

From NCERT

NEET - 2023

Please attempt this question first.

Hints

Please attempt this question first.

The maximum power is dissipated for an AC in a/an:

1. | resistive circuit | 2. | \({LC}\) circuit |

3. | inductive circuit | 4. | capacitive circuit |

Subtopic: Power factor |

71%

From NCERT

NEET - 2023

Please attempt this question first.

Hints

Please attempt this question first.

Select Question Set: