MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Electric Drives Questions and Answers 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 Ω 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 Ω, 3 Ω. |
| A. | 3 Ω |
| B. | 2 Ω |
| C. | 4 Ω |
| D. | 7 Ω |
| Answer» C. 4 Ω | |
| 3. |
Calculate the quality factor for the R-L circuit if R=16 Ω and XL=8 Ω 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/s2 |
| B. | 2 rad/s2 |
| C. | 3 rad/s2 |
| D. | 5 rad/s2 |
| Answer» B. 2 rad/s2 | |
| 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/α) is __________ |
| A. | Io e-t/α |
| B. | Io |
| C. | 2Io |
| D. | -Io |
| Answer» C. 2Io | |
| 7. |
The maximum Voltage across the capacitor Vc(t)=Vo(1- e-t) is __________ |
| A. | Vo |
| B. | 2Vo |
| C. | 3Vo |
| D. | -Vo |
| Answer» B. 2Vo | |
| 8. |
Calculate the steady state value for x(t)=7e-9t. |
| A. | 0 |
| B. | 8 |
| C. | 3 |
| D. | 1 |
| Answer» B. 8 | |
| 9. |
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. | |