MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Network Theory knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
M(t) = 2, 0≤t<4; t2, t≥4;The Laplace transform of W (t) is ___________ |
| A. | \(\frac{2}{s} – e^{-4s} \left(\frac{2}{s^3} – \frac{8}{s^2} – \frac{14}{s}\right)\) |
| B. | \(\frac{2}{s} + e^{-4s} \left(\frac{2}{s^3} – \frac{8}{s^2} – \frac{14}{s}\right)\) |
| C. | \(\frac{2}{s} – e^{-4s} \left(\frac{2}{s^3} + \frac{8}{s^2} + \frac{14}{s}\right)\) |
| D. | \(\frac{2}{s} + e^{-4s} \left(\frac{2}{s^3} + \frac{8}{s^2} + \frac{14}{s}\right)\) |
| Answer» E. | |
| 2. |
A CRO probe has an impedance of 500 kΩ in parallel with a capacitance of 10 pF. The probe is used to measure the voltage between P and Q as shown in the figure. The measured voltage will be? |
| A. | 3.53 V |
| B. | 3.47 V |
| C. | 5.54 V |
| D. | 7.00 V |
| Answer» C. 5.54 V | |
| 3. |
The Current Transformer supplies current to the current coil of a power factor meter, energy meter and, an ammeter. These are connected as? |
| A. | All coils in parallel |
| B. | All coils in series |
| C. | Series-parallel connection with two in each arm |
| D. | Series-parallel connection with one in each arm |
| Answer» C. Series-parallel connection with two in each arm | |
| 4. |
For any given signal, average power in its 8 harmonic components as 50 mW each and fundamental component also has 50 mV power. Then, average power in the periodic signal is _______________ |
| A. | 750 |
| B. | 400 |
| C. | 100 |
| D. | 50 |
| Answer» C. 100 | |
| 5. |
Two similar coils have self-inductance of 20 mH each. Coefficient of coupling is 0.4. The mutual inductance M is ______________ |
| A. | 2.5 mH |
| B. | 8 mH |
| C. | 7 mH |
| D. | 1 mH |
| Answer» C. 7 mH | |
| 6. |
An RLC series circuit has R = 7.07 Ω, L = .707 H and C = 7.07 μF. At Half power frequencies the circuit impedance is ___________ |
| A. | 7.07 Ω |
| B. | 10 Ω |
| C. | 14.14 Ω |
| D. | 20 Ω |
| Answer» C. 14.14 Ω | |
| 7. |
A coil has resistance R and inductance L. At ω = ∞ the phase angle between voltage and current is _____________ |
| A. | 0° |
| B. | 180° |
| C. | 45° |
| D. | 90° |
| Answer» E. | |
| 8. |
In a two terminals network the open circuit voltage measured at the given terminals is 110 V and short circuit currents at the same terminals 10 A. If a load of 50 Ω resistance is connected at the terminals, load current is ___________ |
| A. | 1.8 A |
| B. | 1.25 A |
| C. | 6 A |
| D. | 6.25 A |
| Answer» B. 1.25 A | |
| 9. |
Poles and zeros of a driving point function of a network are simple and alternate on jω axis. The network consists of ___________ |
| A. | R and C |
| B. | L and C |
| C. | R and L |
| D. | R, L and C |
| Answer» C. R and L | |
| 10. |
In an unloaded transformer, the flux limiting the primary is 10 mWb and secondary is 30 mWb. The coefficient of coupling is ____________ |
| A. | 1 |
| B. | 0.1 |
| C. | 0.33 |
| D. | 0.67 |
| Answer» D. 0.67 | |
| 11. |
An RLC series circuit has Q = 100 and ω0 = 20 rad/sec. The bandwidth is ____________ |
| A. | 0.2 rad/sec |
| B. | 2 rad/sec |
| C. | 20 rad/sec |
| D. | 2000 rad/sec |
| Answer» B. 2 rad/sec | |
| 12. |
A constant k band pass filter has a pass band from 100 to 400 Hz. The resonant frequency of series and shunt arms is ____________ |
| A. | 300 Hz |
| B. | 250 Hz |
| C. | 200 Hz |
| D. | 150 Hz |
| Answer» D. 150 Hz | |
| 13. |
Two coils having self-inductances of 1 mH and 2 mH are mutually coupled. The maximum possible mutual inductance is ___________ |
| A. | 1.414 mH |
| B. | 2 mH |
| C. | 1 mH |
| D. | 5.5 mH |
| Answer» B. 2 mH | |
| 14. |
A network has two branches in parallel. One branch contains impedance Za and the other branch has impedance Zb. If it is fed from an AC voltage V of frequency f, the current through Za depends, on which of the following? |
| A. | V, Za, Zb |
| B. | V, Za |
| C. | Za, Zb |
| D. | V, Za, f |
| Answer» E. | |
| 15. |
The resistance of a 230 V, 100 W lamp is ____________ |
| A. | 529 Ω |
| B. | 2300 Ω |
| C. | 5290 Ω |
| D. | 23 Ω |
| Answer» B. 2300 Ω | |