MCQOPTIONS
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MCQOPTIONS
This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Machines knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Two parallel plates, each of area A = 1m2 are separated by a distance g. The electric field intensity between the plates is 3 106 v/m. What is the force between the two plates? |
| A. | 1/2 10<sup>3</sup> N |
| B. | 1/8 10<sup>3</sup> N |
| C. | 8 10<sup>3</sup> N |
| D. | 0 N |
| Answer» C. 8 10<sup>3</sup> N | |
| 2. |
Charge and voltage associated with electric field are analogous, respectively to __________ and ___________ in magnetic field. |
| A. | flux linkages and current |
| B. | flux density and current |
| C. | flux linkages and voltage |
| D. | MMF and current |
| Answer» B. flux density and current | |
| 3. |
The force produced by electric field in a singly excited energy conversion device, using electric field as coupling medium can be obtained by ___________ |
| A. | use of field energy function only |
| B. | use of coenergy function only |
| C. | use of field energy or coenergy function |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 4. |
A parallel plate capacitor has an electrode area of 1000 mm2, with a spacing of 0.1 mm between the electrodes. The dielectric between the plates is air with a permittivity of 8.85 10-12 F/m. The charge on the capacitor is 100 v. The stored energy in the capacitor is ____________ |
| A. | 44.3 J |
| B. | 444.3 nJ |
| C. | 88.6 nJ |
| D. | 44.3 nJ |
| Answer» E. | |
| 5. |
A parallel plate capacitor has a capacitance of 10 F. If the linear dimensions of the plates are doubled and distance between them is also doubled, the new value of capacitance would be __________ |
| A. | 10 F |
| B. | 20 F |
| C. | 5 F |
| D. | 40 F |
| Answer» C. 5 F | |