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. |
If it is happened to place an inductive load to a two winding transformer, then the phasor diagram for such a loading will be? |
| A. | <a href="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-ideal-two-winding-transformer-q12a.png"><img alt="The phasor diagram for an inductive load to a two winding transformer - option a" class="alignnone size-full wp-image-161156" height="281" src="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-ideal-two-winding-transformer-q12a.png" width="277"/></a> |
| B. | <a href="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-ideal-two-winding-transformer-q12b.png"><img alt="The phasor diagram for an inductive load to a two winding transformer - option b" class="alignnone size-full wp-image-161157" height="300" src="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-ideal-two-winding-transformer-q12b.png" width="286"/></a> |
| C. | <a href="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-ideal-two-winding-transformer-q7a.png"><img alt="The phasor diagram for an inductive load to a two winding transformer - option c" class="alignnone size-full wp-image-161148" height="295" src="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-ideal-two-winding-transformer-q7a.png" width="222"/></a> |
| D. | <a href="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-ideal-two-winding-transformer-q12d.png"><img alt="The phasor diagram for an inductive load to a two winding transformer - option d" class="alignnone size-full wp-image-161160" height="300" src="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-ideal-two-winding-transformer-q12d.png" width="285"/></a> |
| Answer» B. <a href="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-ideal-two-winding-transformer-q12b.png"><img alt="The phasor diagram for an inductive load to a two winding transformer - option b" class="alignnone size-full wp-image-161157" height="300" src="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-ideal-two-winding-transformer-q12b.png" width="286"/></a> | |
| 2. |
Consider a 2-winding transformer as below. If the switch is open then the emf induced across the secondary having transformation ratio of 2 is? |
| A. | zero |
| B. | V1 |
| C. | V1/2 |
| D. | 2*V1 |
| Answer» E. | |
| 3. |
Consider a 2-winding transformer as below. If the switch is open then the emf induced across the load Zl having transformation ratio of 2 is? |
| A. | zero |
| B. | V1 |
| C. | V1/2 |
| D. | 2*V1 |
| Answer» B. V1 | |
| 4. |
Identify the phasor diagram for an ideal transformer at no load. |
| A. | <a href="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-ideal-two-winding-transformer-q7a.png"><img alt="The phasor diagram for an ideal transformer at no load - option a" class="alignnone size-full wp-image-161148" height="295" src="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-ideal-two-winding-transformer-q7a.png" width="222"/></a> |
| B. | <a href="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-ideal-two-winding-transformer-q7b.png"><img alt="The phasor diagram for an ideal transformer at no load - option b" class="alignnone size-full wp-image-161149" height="296" src="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-ideal-two-winding-transformer-q7b.png" width="252"/></a> |
| C. | <a href="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-ideal-two-winding-transformer-q7c.png"><img alt="The phasor diagram for an ideal transformer at no load - option c" class="alignnone size-full wp-image-161151" height="291" src="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-ideal-two-winding-transformer-q7c.png" width="265"/></a> |
| D. | <a href="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-ideal-two-winding-transformer-q7d.png"><img alt="The phasor diagram for an ideal transformer at no load - option d" class="alignnone size-full wp-image-161152" height="300" src="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-ideal-two-winding-transformer-q7d.png" width="246"/></a> |
| Answer» B. <a href="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-ideal-two-winding-transformer-q7b.png"><img alt="The phasor diagram for an ideal transformer at no load - option b" class="alignnone size-full wp-image-161149" height="296" src="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-ideal-two-winding-transformer-q7b.png" width="252"/></a> | |
| 5. |
The voltage induced at the end of primary terminals of a two winding transformer consisting of N turns is? |
| A. | -N*d /dt |
| B. | N*d /dt |
| C. | -d /dt |
| D. | -N*dt/d |
| Answer» B. N*d /dt | |