Loading Test...

Instruction:

- This is a FREE online test. DO NOT pay money to anyone to attend this test.
- Total number of questions :
**20**. - Time alloted :
**30**minutes. - Each question carry 1 mark, no negative marks.
- DO NOT refresh the page.
- All the best :-).

1. | When a solenoid is activated, the force that moves the plunger is |
|||||||||||||||||||

Your Answer: Option (Not Answered) Correct Answer: Option A Learn more problems on : Magnetism and Electromagnetism Discuss about this problem : Discuss in Forum |

2. | What is the reluctance of a material that has a length of 0.07 m, a cross-sectional area of 0.014 m |
|||||||||||||||||||

Your Answer: Option (Not Answered) Correct Answer: Option A Learn more problems on : Magnetism and Electromagnetism Discuss about this problem : Discuss in Forum |

3. | How many primary volts must be applied to a transformer with a turns ratio of 0.1 to obtain a secondary voltage of 9 V? |
|||||||||||||||||||

Your Answer: Option (Not Answered) Correct Answer: Option B Explanation: We know that, V2/V1 = N2/N1. For more detail: Learn more problems on : Transformers Discuss about this problem : Discuss in Forum |

4. | The primary winding of a transformer has 110 V ac across it. What is the secondary voltage if the turns ratio is 8? |
|||||||||||||||||||

Your Answer: Option (Not Answered) Correct Answer: Option C Explanation: V2/V1 = N2/N1 Learn more problems on : Transformers Discuss about this problem : Discuss in Forum |

5. | The turns ratio required to match an 80 source to a 320 load is |
|||||||||||||||||||

Your Answer: Option (Not Answered) Correct Answer: Option D Learn more problems on : Transformers Discuss about this problem : Discuss in Forum |

6. | To increase the current in a series |
|||||||||||||||||||

Your Answer: Option (Not Answered) Correct Answer: Option B Learn more problems on : RL Circuits Discuss about this problem : Discuss in Forum |

7. | When the frequency is decreased, the impedance of a parallel |
|||||||||||||||||||

Your Answer: Option (Not Answered) Correct Answer: Option B Learn more problems on : RL Circuits Discuss about this problem : Discuss in Forum |

8. | Norton's theorem gives |
|||||||||||||||||||

Your Answer: Option (Not Answered) Correct Answer: Option A Learn more problems on : Circuit Theorems in AC Analysis Discuss about this problem : Discuss in Forum |

9. | Find the current in |
|||||||||||||||||||

Your Answer: Option (Not Answered) Correct Answer: Option C Learn more problems on : Circuit Theorems and Conversions Discuss about this problem : Discuss in Forum |

10. | An autotransformer is one in which the primary and secondary are automatically coupled. |
|||||||||

Your Answer: Option (Not Answered) Correct Answer: Option B Learn more problems on : Transformers Discuss about this problem : Discuss in Forum |

11. | In an ac circuit, power to the load peaks at the frequency at which the load impedance is the complex conjugate of the output impedance. |
|||||||||

Your Answer: Option (Not Answered) Correct Answer: Option A Learn more problems on : Circuit Theorems in AC Analysis Discuss about this problem : Discuss in Forum |

12. | The number 4,500,000 can be expressed as |
|||||||||||||||||||

Your Answer: Option (Not Answered) Correct Answer: Option B Learn more problems on : Quantities and Units Discuss about this problem : Discuss in Forum |

13. | The number of millivolts in 0.06 kilovolts is |
|||||||||||||||||||

Your Answer: Option (Not Answered) Correct Answer: Option C Learn more problems on : Quantities and Units Discuss about this problem : Discuss in Forum |

14. | Polyphase is characterized by two or more sinusoidal voltages, each having a different phase angle. |
|||||||||

Your Answer: Option (Not Answered) Correct Answer: Option A Learn more problems on : Three-Phase Systems in Power Applications Discuss about this problem : Discuss in Forum |

15. | How much current is produced by a voltage of 18 kV across a 15 k resistance? |
|||||||||||||||||||

Your Answer: Option (Not Answered) Correct Answer: Option A Learn more problems on : Ohm's Law Discuss about this problem : Discuss in Forum |

16. | The unit of electrical charge is the |
|||||||||||||||||||

Your Answer: Option (Not Answered) Correct Answer: Option A Learn more problems on : Voltage, Current and Resistance Discuss about this problem : Discuss in Forum |

17. | When a 1.6 k resistor and a 120 resistor are connected in parallel, the total resistance is |
|||||||||||||||||||

Your Answer: Option (Not Answered) Correct Answer: Option C Learn more problems on : Parallel Circuits Discuss about this problem : Discuss in Forum |

18. | The complex number 40 55° is equivalent to |
|||||||||||||||||||

Your Answer: Option (Not Answered) Correct Answer: Option D Learn more problems on : RC Circuits Discuss about this problem : Discuss in Forum |

19. | Using the current-divider formula, you can find the current in any branch of a series-parallel circuit. |
|||||||||

Your Answer: Option (Not Answered) Correct Answer: Option A Learn more problems on : Series-Parallel Circuits Discuss about this problem : Discuss in Forum |

20. | The branch current method uses |
|||||||||||||||||||

Your Answer: Option (Not Answered) Correct Answer: Option A Learn more problems on : Branch, Loop and Node Analyses Discuss about this problem : Discuss in Forum |

**Submit your test now to view the Results and Statistics with answer explanation.**