MCQOPTIONS
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MCQOPTIONS
This section includes 9 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. |
What is a mark to space ratio? |
| A. | Ton÷Toff |
| B. | Ton÷(Ton- Toff) |
| C. | Ton÷2×(Ton*Toff) |
| D. | Ton÷2×Toff |
| Answer» B. Ton÷(Ton- Toff) | |
| 2. |
The slope of the I-V curve is 30°. Calculate the value of resistance. Assume the relationship between I and V is a straight line. |
| A. | 1.732 Ω |
| B. | 2.235 Ω |
| C. | 1.625 Ω |
| D. | 1.524 Ω |
| Answer» B. 2.235 Ω | |
| 3. |
The phase difference between voltage and current in the capacitor. |
| A. | 90° |
| B. | 80° |
| C. | 95° |
| D. | 91° |
| Answer» B. 80° | |
| 4. |
The phase difference between voltage and current in the resistor. |
| A. | 85° |
| B. | 90° |
| C. | 0° |
| D. | 5° |
| Answer» D. 5° | |
| 5. |
The phase difference between voltage and current in the inductor. |
| A. | 45° |
| B. | 90° |
| C. | 80° |
| D. | 55° |
| Answer» C. 80° | |
| 6. |
Which of the following motor can be referred as a universal motor? |
| A. | DC shunt motor |
| B. | DC compound motor |
| C. | Permanent magnet motor |
| D. | DC series motor |
| Answer» E. | |
| 7. |
The unit of the flux is Weber. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
The generated e.m.f from 25-pole armature having 200 conductors driven at 10 rev/sec having flux per pole as 20 mWb, with two parallel paths is ___________ |
| A. | 400 V |
| B. | 500 V |
| C. | 200 V |
| D. | 300 V |
| Answer» C. 200 V | |
| 9. |
The axis along which no emf is produced in the armature conductors is called as ____________a) Geometrical Neutral Axis (GNA)b) Magnetic Neutral Axis (MN |
| A. | Geometrical Neutral Axis (GNA) |
| B. | Magnetic Neutral Axis (MNA) |
| C. | Axis of rotation |
| D. | Axis of revolution |
| Answer» C. Axis of rotation | |