MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 14 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;
|
| A. | nThe Laplace transform of W (t) is ___________ |
| 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) ) |
| E. | ( frac{2}{s} + e^{-4s} left( frac{2}{s^3} + frac{8}{s^2} + frac{14}{s} right) ) |
| Answer» E. ( frac{2}{s} + e^{-4s} left( frac{2}{s^3} + frac{8}{s^2} + frac{14}{s} right) ) | |
| 2. |
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 | |
| 3. |
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 | |
| 4. |
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 | |
| 5. |
An RLC series circuit has R = 7.07 , L = .707 H and C = 7.07 F. At Half power frequencies the circuit impedance is ___________ |
| A. | 7.07 |
| B. | 10 |
| C. | 14.14 |
| D. | 20 |
| Answer» C. 14.14 | |
| 6. |
A coil has resistance R and inductance L. At = the phase angle between voltage and current is _____________ |
| A. | 0 |
| B. | 180 |
| C. | 45 |
| D. | 90 |
| Answer» E. | |
| 7. |
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 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 | |
| 8. |
Poles and zeros of a driving point function of a network are simple and alternate on j 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 | |
| 9. |
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 | |
| 10. |
An RLC series circuit has Q = 100 and 0 = 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 | |
| 11. |
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 | |
| 12. |
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 | |
| 13. |
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, Z<sub>a</sub>, Z<sub>b</sub> |
| B. | V, Z<sub>a</sub> |
| C. | Z<sub>a</sub>, Z<sub>b</sub> |
| D. | V, Z<sub>a</sub>, f |
| Answer» E. | |
| 14. |
The resistance of a 230 V, 100 W lamp is ____________ |
| A. | 529 |
| B. | 2300 |
| C. | 5290 |
| D. | 23 |
| Answer» B. 2300 | |