MCQOPTIONS
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MCQOPTIONS
This section includes 32 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Offset mho relay is used for the protection of equipment when |
| A. | failure of prime mover of the generator |
| B. | loss of excitation of the generator |
| C. | either 1 or 2 |
| D. | none of the above |
| Answer» C. either 1 or 2 | |
| 2. |
There is a ________ between two nodes of signal flow graph |
| A. | link. |
| B. | branch. |
| C. | tree. |
| D. | none of the above. |
| Answer» C. tree. | |
| 3. |
In case of failure of prime mover of the generator, which type of relay is used? |
| A. | offset mho relay |
| B. | reverse power relay |
| C. | impedance relay |
| D. | distance relays |
| Answer» C. impedance relay | |
| 4. |
In 2 port network Z12 = Z21 indicates which property |
| A. | unilateral. |
| B. | bilateral. |
| C. | linear. |
| D. | non linear. |
| Answer» C. linear. | |
| 5. |
According to duality principle a series inductor (L) can be represented as |
| A. | Series L |
| B. | Parallel L |
| C. | Series C |
| D. | Parallel C |
| Answer» E. | |
| 6. |
For band pass filter, cut off frequency of LPF should be --------HPF? |
| A. | < |
| B. | > |
| C. | = |
| D. | All of the above |
| Answer» C. = | |
| 7. |
In a series resonant circuit impedance is |
| A. | minimum. |
| B. | maximum. |
| C. | zero. |
| D. | none of these. |
| Answer» B. maximum. | |
| 8. |
Specific resistance is measured in |
| A. | mho. |
| B. | ohm. |
| C. | ohm - cm. |
| D. | ohm/cm. |
| Answer» D. ohm/cm. | |
| 9. |
In foster 1 form 1st element is |
| A. | capacitor. |
| B. | inductor. |
| C. | both. |
| D. | none. |
| Answer» B. inductor. | |
| 10. |
If all the elements in a particular network are linear, then the superposition theorem would hold, when the excitation is |
| A. | DC only |
| B. | AC only |
| C. | Either AC or DC |
| D. | An Impulse |
| Answer» D. An Impulse | |
| 11. |
Nodal analysis can be applied for |
| A. | planar networks. |
| B. | non planar networks. |
| C. | both planner and non planner networks. |
| D. | neither planner nor non planner networks. |
| Answer» D. neither planner nor non planner networks. | |
| 12. |
LC oscillators are used for produce a waveform with frequency ranging from |
| A. | 1MHz to 500 MHz |
| B. | 100 KHz to 500 MHz |
| C. | 1 KHz to 1 MHz |
| D. | 1MHz to 100 GHz |
| Answer» B. 100 KHz to 500 MHz | |
| 13. |
Super mesh analysis is used in case of, |
| A. | Current source branch is common for two meshes |
| B. | Ideal voltage source is connected between two non reference nodes |
| C. | Both |
| D. | Either 1 or 2 |
| Answer» B. Ideal voltage source is connected between two non reference nodes | |
| 14. |
Given network is having N nodes and b branches, then number of twigs are |
| A. | N |
| B. | N-1 |
| C. | b-N+1 |
| D. | b-N-1 |
| Answer» C. b-N+1 | |
| 15. |
Rank of tie set matrix is |
| A. | N |
| B. | N-1 |
| C. | b-N+1 |
| D. | b-N-1 |
| Answer» D. b-N-1 | |
| 16. |
Given network is having N nodes and b branches, then number of individual loops are |
| A. | N |
| B. | N-1 |
| C. | b-N+1 |
| D. | b-N-1 |
| Answer» D. b-N-1 | |
| 17. |
In a series resonance circuit if band width is 1 MHz and inductance is 1 mH, then what is the resistance value? |
| A. | 1 KΩ |
| B. | 1 MΩ |
| C. | 1 Ω |
| D. | 100 Ω |
| Answer» B. 1 MΩ | |
| 18. |
A pole of driving point impedance is |
| A. | Zero current for a finite value of driving voltage |
| B. | Zero voltage for a finite value of driving current |
| C. | Zero voltage for a finite value of driving voltage |
| D. | Zero current for a finite value of driving current |
| Answer» B. Zero voltage for a finite value of driving current | |
| 19. |
Mesh analysis is prefered when loops are------nodes |
| A. | < |
| B. | > |
| C. | = |
| D. | Any of the above |
| Answer» B. > | |
| 20. |
Basic cut set matrix consists of |
| A. | one branch |
| B. | no branches |
| C. | 2 branch |
| D. | Any number of branches |
| Answer» B. no branches | |
| 21. |
Reciprocity condition for h parameters is |
| A. | h12 = h21 |
| B. | h12 = - h21 |
| C. | h12 = h21 |
| D. | h11h22 - h21h12 = 0 |
| Answer» C. h12 = h21 | |
| 22. |
When we use super node technique |
| A. | Current source branch is common for two meshes |
| B. | Ideal voltage source is connected between two non reference nodes |
| C. | Ideal voltage source is connected between non reference node and reference |
| D. | All of the above |
| Answer» C. Ideal voltage source is connected between non reference node and reference | |
| 23. |
If clock time period is 1ms, what is its frequency |
| A. | 1 mHz |
| B. | 1 kHz |
| C. | 1 MHz |
| D. | None of the above |
| Answer» C. 1 MHz | |
| 24. |
The supply frequency usually employed for high frequency eddy current heating is |
| A. | 1 KHz. |
| B. | 5 KHz. |
| C. | 10 MHz. |
| D. | 10 KHz to 400 KHz. |
| Answer» E. | |
| 25. |
For dielectric heating the range of frequency normally employed is |
| A. | 10 KHz to 100 KHz. |
| B. | 100 KHz to 10 MHz. |
| C. | 1 MHz to 10 MHz. |
| D. | 10 MHz to 40 MHz. |
| Answer» E. | |
| 26. |
In signal flow graph input node is node having only------------ |
| A. | incoming branches |
| B. | outgoing branches |
| C. | both 1 and 2 |
| D. | none of the above |
| Answer» C. both 1 and 2 | |
| 27. |
What type of back up protection is used for alternators? |
| A. | IDMT relay. |
| B. | Buchholz relay. |
| C. | Mho relay. |
| D. | Impedance relay. |
| Answer» B. Buchholz relay. | |
| 28. |
An electrical circuit with 10 branches and 7 nodes will have |
| A. | 10 loop equations. |
| B. | 7 loop equations. |
| C. | 3 loop equations. |
| D. | 4 loop equations. |
| Answer» E. | |
| 29. |
When testing a coil having a resistance of 10 ohms, resonance occured when the oscillator frequency was 10 Mhz and rotating capacitor was set at 500/2�� pF. The effective value of the Q of the coil is |
| A. | 200 |
| B. | 254 |
| C. | 314 |
| D. | 542 |
| Answer» B. 254 | |
| 30. |
The conductor of a 10 Km long single phase, two wire line are separated by a distance of 1.5 m the diameter of each conductor the inductance of the circuit is |
| A. | 23.8 mH. |
| B. | 23.33 mH. |
| C. | 25.8 mH. |
| D. | 21.2 mH. |
| Answer» B. 23.33 mH. | |
| 31. |
In signal flow graph output node is node having only------------ |
| A. | incoming branches |
| B. | outgoing branches |
| C. | both 1 and 2 |
| D. | none of the above |
| Answer» B. outgoing branches | |
| 32. |
Mho relay is used for protection of |
| A. | short lines. |
| B. | long lines. |
| C. | medium lines. |
| D. | none of these. |
| Answer» C. medium lines. | |