MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Electric Drives knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Calculate the quality factor for the R-C circuit if R=1 and C=1 F. |
| A. | 2 |
| B. | 4 |
| C. | 1 |
| D. | 5 |
| Answer» D. 5 | |
| 2. |
Calculate the equivalent resistance when two armature resistances are connected in parallel of values 6 , 3 . |
| A. | 3 |
| B. | 2 |
| C. | 4 |
| D. | 7 |
| Answer» C. 4 | |
| 3. |
Calculate the quality factor for the R-L circuit if R=16 and XL=8 with supply frequency is 1 rad/sec. |
| A. | 2 |
| B. | 6 |
| C. | 0 |
| D. | 7 |
| Answer» B. 6 | |
| 4. |
Calculate the value of the angular acceleration of the DC shunt motor using the given data: J = 1 kg-m2, load torque = 1 N-m, motor torque = 2 N-m. |
| A. | 1 rad/s<sup>2</sup> |
| B. | 2 rad/s<sup>2</sup> |
| C. | 3 rad/s<sup>2</sup> |
| D. | 5 rad/s<sup>2</sup> |
| Answer» B. 2 rad/s<sup>2</sup> | |
| 5. |
20 V, 10 A, 10 rpm separately excited dc motor with armature resistance (Ra) equal to .8 ohms. Calculate back emf developed in the motor when it operates on the full load. (Assume rotational losses are neglected) |
| A. | 12 V |
| B. | 14 V |
| C. | 13 V |
| D. | 11 V |
| Answer» B. 14 V | |
| 6. |
The maximum current in the inductor IL(t)=Io(1 e-t/ ) is __________ |
| A. | I<sub>o</sub> e<sup>-t/ </sup> |
| B. | I<sub>o</sub> |
| C. | 2I<sub>o</sub> |
| D. | -I<sub>o</sub> |
| Answer» C. 2I<sub>o</sub> | |
| 7. |
Calculate the value of the coefficient of coupling for the tightly coupled coils. |
| A. | 0 |
| B. | 1 |
| C. | 3 |
| D. | 2 |
| Answer» C. 3 | |
| 8. |
The maximum Voltage across the capacitor Vc(t)=Vo(1- e-t) is __________ |
| A. | V<sub>o</sub> |
| B. | 2V<sub>o</sub> |
| C. | 3V<sub>o</sub> |
| D. | -V<sub>o</sub> |
| Answer» B. 2V<sub>o</sub> | |
| 9. |
Calculate the steady state value for x(t)=7e-9t. |
| A. | 0 |
| B. | 8 |
| C. | 3 |
| D. | 1 |
| Answer» B. 8 | |
| 10. |
Calculate the resonant frequency if the values of the capacitor and inductor are 2 F and 2 H. |
| A. | .5 rad/sec |
| B. | .6 rad/sec |
| C. | .8 rad/sec |
| D. | .9 rad/sec |
| Answer» B. .6 rad/sec | |
| 11. |
The characteristics shown by an element in the V-I curve is V=Is(1-e-V/K). The nature of the element is _______ |
| A. | Non-linear, Bilateral, Passive |
| B. | Linear, Unilateral, Active |
| C. | Linear, Bilateral, Passive |
| D. | Non-linear, Unilateral, Passive |
| Answer» E. | |
| 12. |
Full form of NENO. |
| A. | Neither even nor odd |
| B. | Neither energy nor odd |
| C. | Neither even nor original |
| D. | Neither even nor orthogonal |
| Answer» B. Neither energy nor odd | |
| 13. |
The cosine function is an even function. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 14. |
The sine function is an odd function. |
| A. | True |
| B. | False |
| Answer» B. False | |