MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Measurements knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The function of the Q- Meter is to _________ |
| A. | Measure capacitance |
| B. | Measure inductance |
| C. | Measure quality factor of capacitor and inductor |
| D. | Measure form factor of capacitor and inductor |
| Answer» D. Measure form factor of capacitor and inductor | |
| 2. |
Consider the following statements regarding the sources of error in a Q Meter. Which of the above statements are correct? |
| A. | i, ii and iii |
| B. | i and ii |
| C. | ii and iii |
| D. | i and iiiView Answer |
| Answer» D. i and iiiView Answer | |
| 3. |
Consider a circuit consisting of two capacitors C1 and C2. Let R be the resistance and L be the inductance which are connected in series. Let Q1 and Q2 be the quality factor for the two capacitors. While measuring the Q value by the Parallel Connection method, the value of the Q factor is? |
| A. | Q = \(\frac{(C_1 – C_2 ) Q_1 Q_2}{Q_1 C_1 – Q_2 C_2}\) |
| B. | Q = \(\frac{(C_2 – C_1 ) Q_1 Q_2}{Q_1 C_1 – Q_2 C_2}\) |
| C. | Q = \(\frac{(C_1 – C_2 ) Q_1 Q_2}{Q_2 C_2 – Q_1 C_1}\) |
| D. | Q = \(\frac{(C_2 – C_1 ) C_1 C_2}{Q_1 C_1 – Q_2 C_2}\) |
| Answer» C. Q = \(\frac{(C_1 – C_2 ) Q_1 Q_2}{Q_2 C_2 – Q_1 C_1}\) | |
| 4. |
Consider a circuit consisting of two capacitors C1 and C2. Let R be the resistance and L be the inductance which are connected in series. Let Q1 and Q2 be the quality factor for the two capacitors. While measuring the Q value by the Series Connection method, the value of the Q factor is? |
| A. | Q = \(\frac{(C_1 – C_2 ) Q_1 Q_2}{Q_1 C_1 – Q_2 C_2}\) |
| B. | Q = \( \frac{(C_2 – C_1 ) Q_1 Q_2}{Q_1 C_1 – Q_2 C_2}\) |
| C. | Q = \( \frac{(C_1 – C_2 ) Q_1 Q_2}{Q_2 C_2 – Q_1 C_1}\) |
| D. | Q = \( \frac{(C_2 – C_1 ) C_1 C_2}{Q_1 C_1 – Q_2 C_2}\) |
| Answer» B. Q = \( \frac{(C_2 – C_1 ) Q_1 Q_2}{Q_1 C_1 – Q_2 C_2}\) | |
| 5. |
Q factor of a coil measured by the Q Meter is _________ the actual Q of the coil. |
| A. | Equal to |
| B. | Same but somewhat lesser than |
| C. | Same but somewhat higher than |
| D. | Not equal to |
| Answer» C. Same but somewhat higher than | |
| 6. |
Q Meter is used to measure _________ |
| A. | Q factor of an inductive coil |
| B. | Only the effective resistance |
| C. | Only bandwidth |
| D. | Q factor of an inductive coil, the effective resistance, and bandwidth |
| Answer» E. | |
| 7. |
A circuit tuned to a frequency of 1.5 MHz and having an effective capacitance of 150 pF. In this circuit, the current falls to 70.7 % of its resonant value. The deviates from the resonant frequency are 5 kHz. Effective resistance of the circuit is? |
| A. | 2 Ω |
| B. | 3 Ω |
| C. | 5.5 Ω |
| D. | 4.7 Ω |
| Answer» E. | |
| 8. |
A circuit tuned to a frequency of 1.5 MHz and having an effective capacitance of 150 pF. In this circuit, the current falls to 70.7 % of its resonant value. The frequency deviates from the resonant frequency by 5 kHz. Q factor is? |
| A. | 50 |
| B. | 100 |
| C. | 150 |
| D. | 200 |
| Answer» D. 200 | |
| 9. |
In a Q Meter, the values of tuning capacitor are C3 and C4 for resonant frequencies f3 and 2f4 respectively. The value of distributed capacitance is? |
| A. | \(\frac{C_3-C_4}{2}\) |
| B. | \(\frac{C_3-2C_4}{3}\) |
| C. | \(\frac{C_3-4C_4}{3}\) |
| D. | \(\frac{C_3-3C_4}{2}\) |
| Answer» D. \(\frac{C_3-3C_4}{2}\) | |
| 10. |
Q meter operator is the principle of __________ |
| A. | Series resonance |
| B. | Current resonance |
| C. | Self-inductance |
| D. | Eddy currents |
| Answer» B. Current resonance | |