MCQOPTIONS
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MCQOPTIONS
This section includes 12 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 active power in a 5 Ω resistor with 5 A current flowing through it. |
| A. | 125 W |
| B. | 110 W |
| C. | 115 W |
| D. | 126 W |
| Answer» B. 110 W | |
| 2. |
Calculate the active power in a 241 H inductor. |
| A. | 21 W |
| B. | 11 W |
| C. | 0 W |
| D. | .51 W |
| Answer» D. .51 W | |
| 3. |
Calculate the active power in a 19 F capacitor. |
| A. | 7.8 W |
| B. | 0 W |
| C. | 5.4 W |
| D. | 1.5 W |
| Answer» C. 5.4 W | |
| 4. |
Calculate the active power in a 41 H inductor. |
| A. | 2 W |
| B. | 1 W |
| C. | 0 W |
| D. | .5 W |
| Answer» D. .5 W | |
| 5. |
The slope of the V-I curve is 19°. Calculate the value of resistance. Assume the relationship between voltage and current is a straight line. |
| A. | .3254 Ω |
| B. | .3608 Ω |
| C. | .3543 Ω |
| D. | .3443 Ω |
| Answer» E. | |
| 6. |
Calculate the value of the frequency if the inductive reactance is 45 Ω and the value of the inductor is 15 H. |
| A. | 0.477 Hz |
| B. | 0.544 Hz |
| C. | 0.465 Hz |
| D. | 0.412 Hz |
| Answer» B. 0.544 Hz | |
| 7. |
What is the unit of the admittance? |
| A. | ohm |
| B. | ohm-1 |
| C. | ohm2 |
| D. | ohm.5 |
| Answer» C. ohm2 | |
| 8. |
R.M.S value of the trapezoidal waveform V=Vmsin(Ωt+α). |
| A. | Vm÷2½ |
| B. | Vm÷2¼ |
| C. | Vm÷2¾ |
| D. | Vm÷3½ |
| Answer» E. | |
| 9. |
Calculate the moment of inertia of the solid sphere having a mass of 28 kg and diameter of 15 cm. |
| A. | 0.01575 kgm2 |
| B. | 0.01875 kgm2 |
| C. | 0.01787 kgm2 |
| D. | 0.01568 kgm2 |
| Answer» B. 0.01875 kgm2 | |
| 10. |
Calculate the phase angle of the sinusoidal waveform x(t)=20sin(9πt+π÷7). |
| A. | π÷9 |
| B. | π÷5 |
| C. | π÷7 |
| D. | π÷4 |
| Answer» D. π÷4 | |
| 11. |
The generated e.m.f from 42-pole armature having 74 turns driven at 64 rev/sec having flux per pole as 21 mWb, with wave winding is ___________ |
| A. | 4177.171 V |
| B. | 4177.152 V |
| C. | 4100.189 V |
| D. | 4190.454 V |
| Answer» C. 4100.189 V | |
| 12. |
Calculate the time period of the waveform y(t)=74cos(81πt+π). |
| A. | .024 sec |
| B. | .027 sec |
| C. | .023 sec |
| D. | .025 sec |
| Answer» B. .027 sec | |