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This section includes 59 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Engineering Questions knowledge and support exam preparation. Choose a topic below to get started.
1. |
Which method provides cash for the replacement of asset at the end of its useful life? |
A. | Straight line depreciation |
B. | Sum of years digits depreciation |
C. | Declining balance depreciation |
D. | Sinking fund depreciation |
Answer» E. | |
2. |
Which is the major energy source to meet the Indian energy demand? |
A. | Coal |
B. | Oil |
C. | Natural gas |
D. | Lignite |
Answer» B. Oil | |
3. |
Which country has the biggest coal reserves? |
A. | Russia |
B. | US |
C. | China |
D. | India |
Answer» C. China | |
4. |
Which country has highest energy usage per capita? |
A. | Iceland |
B. | Qatar |
C. | Kuwait |
D. | United Arab emirates |
Answer» B. Qatar | |
5. |
Which among the following is not the pronged approach to energy management? |
A. | Capacity utilization |
B. | Fine turning of equipment |
C. | Technology up gradation |
D. | All of these |
E. | None of these |
Answer» F. | |
6. |
Which among the following fuel is not available for thermal energy supply? |
A. | LSHS |
B. | LDO |
C. | LPG |
D. | All of these |
E. | None of these |
Answer» F. | |
7. |
To save energy, Washington DC, has developed an investment analysis software package, ENVEST. This program can be run on an |
A. | IBM PC |
B. | PCXT |
C. | PCAT |
D. | All of these |
Answer» E. | |
8. |
To reduce the power consumption, the capacitors should be located |
A. | As close as possible to the load |
B. | As far as possible to the load |
C. | Not too close not too far from the load |
D. | All of these |
E. | None of these |
Answer» B. As far as possible to the load | |
9. |
The wattles component is |
A. | I |
B. | I cos∅ |
C. | I sin∅ |
D. | None of these |
Answer» D. None of these | |
10. |
The water pollution prevention and control act was formed in the year |
A. | 1986 |
B. | 1974 |
C. | 1981 |
D. | 1980 |
Answer» C. 1981 | |
11. |
The term Demand Side Management was coined during |
A. | 1936 energy crisis |
B. | 1972 energy crisis |
C. | 1973 energy crisis |
D. | 1986 energy crisis |
Answer» D. 1986 energy crisis | |
12. |
The sum of money received or paid in annual in one or more installments, for a given period of time is known as |
A. | Time value of money |
B. | Annuity |
C. | True compounding |
D. | Cash flow |
Answer» C. True compounding | |
13. |
The secondary distribution transformer is generally |
A. | Star connected |
B. | Star connected with the secondary delta connected |
C. | Delta connected with the secondary star connected |
D. | Delta connected |
Answer» D. Delta connected | |
14. |
The rules of a particular electricity supply system provision for metering, earthing and for other installation matters are in accordance with the electricity supply act of |
A. | 1947 |
B. | 1948 |
C. | 1956 |
D. | 1958 |
Answer» C. 1956 | |
15. |
The rotational speed of an AC induction motor depends on the |
A. | Number of poles in stator |
B. | Frequency of the applied AC power |
C. | Both a and b |
D. | None of these |
Answer» D. None of these | |
16. |
The reduction of utility load primarily during peak demand is known as |
A. | Peak clipping |
B. | Load shifting |
C. | Valley filling |
D. | MTP analysis |
Answer» B. Load shifting | |
17. |
The reactive power component kVAR is equal to the |
A. | kVA sin∅ |
B. | kW tan∅ |
C. | kW cos∅ |
D. | Both (a) and (b) |
E. | None of these |
Answer» E. None of these | |
18. |
The ratio of average load over a designated period to the peak load demand occurring in that period is known as |
A. | power factor |
B. | ratchet rate |
C. | load factor |
D. | production factor |
Answer» D. production factor | |
19. |
The production factor is defined as the ratio of |
A. | current year production to the reference year production |
B. | current year production to the reference month production |
C. | reference month production to the current month production |
D. | reference year production to the current year production |
Answer» B. current year production to the reference month production | |
20. |
The pay period is defined as the ratio of |
A. | Net investment to the net annual cash flow |
B. | Net investment to the capital cost |
C. | Net annual cash flow to the capital cost |
D. | Net annual savings to the capital cost |
Answer» B. Net investment to the capital cost | |
21. |
The monitor and control of energy management system is done by using |
A. | MATLAB |
B. | SCADA |
C. | AUTO - CAED |
D. | All of these |
E. | None of these |
Answer» C. AUTO - CAED | |
22. |
The main objective of energy management is to |
A. | Minimize energy cost |
B. | Minimum environmental effects |
C. | Maintain optimum energy procurement and utilization |
D. | Only A and B |
E. | All of these |
Answer» F. | |
23. |
The Indian electricity rules of 1956 cover |
A. | Inspections of electric installations |
B. | Licensing |
C. | General safety precautions |
D. | Only b and c |
E. | All of these |
Answer» F. | |
24. |
The future value of one dollar in “n” periods at interest rate of “I” present is known as |
A. | Single payment compound amount |
B. | Single payment present worth |
C. | Uniform series compound amount |
D. | Sinking fund payment |
Answer» B. Single payment present worth | |
25. |
The energy strategies of companies have the principle of |
A. | restoring and preserving the environment |
B. | reducing wastes and pollutants |
C. | educating the people about energy conservation |
D. | all of these |
E. | none of these |
Answer» E. none of these | |
26. |
The electric power from primary distribution line is delivered to distribution substations by using |
A. | 1 phase wire |
B. | 3 phase, 3 wire |
C. | 3 phase, 4 wire |
D. | All of these |
E. | None of these |
Answer» D. All of these | |
27. |
The efficiency of variable speed drives generally |
A. | Decreases with speed |
B. | Increases with speed |
C. | Remains constant with change in speed |
D. | None of these |
Answer» B. Increases with speed | |
28. |
The demand side management can be achieved by the technique of |
A. | Time of day pricing and metering |
B. | Multi - utility power exchange model |
C. | Load management |
D. | All of these |
E. | None of these |
Answer» E. None of these | |
29. |
The current flowing through the resistance is given by |
A. | I cos∅ |
B. | I sin∅ |
C. | I tan∅ |
D. | I cot∅ |
Answer» B. I sin∅ | |
30. |
The conversion factor for the standard power rating motor is equal to |
A. | 0.735 |
B. | 0.746 |
C. | 0.748 |
D. | 0.756 |
Answer» C. 0.748 | |
31. |
The capital cost of generating equipment, transmission system and distribution system comes under |
A. | Fixed capital |
B. | Running capital |
C. | Both fixed and running capital |
D. | All of these |
E. | None of these |
Answer» B. Running capital | |
32. |
The basic function of electronic ballast is |
A. | To ignite the lamp |
B. | To stabilize the gas discharge |
C. | To supply the power to the lamp |
D. | Only a and c |
E. | All of these |
Answer» F. | |
33. |
Reactive power is measured in terms of |
A. | kW |
B. | kVA |
C. | kVAR |
D. | None of these |
Answer» D. None of these | |
34. |
Power factor of a load can be improved by using |
A. | Static capacitors |
B. | Synchronous condenser |
C. | Phase advancer |
D. | Only a and b |
E. | All of the above |
Answer» F. | |
35. |
Power factor is the ratio of |
A. | Active power to the reactive power |
B. | Active power to the apparent power |
C. | Apparent power to the active power |
D. | Reactive power to the apparent power |
Answer» C. Apparent power to the active power | |
36. |
Phase advancers are used to improve the power factor of |
A. | Induction motors |
B. | Induction generators |
C. | Synchronous motors |
D. | Synchronous generators |
Answer» B. Induction generators | |
37. |
Maximum demand charges are given in |
A. | kWh |
B. | kVA |
C. | kVAr |
D. | All of these |
E. | None of these |
Answer» C. kVAr | |
38. |
LNG stands for |
A. | Liquefied natural gas |
B. | Liquid natural gas |
C. | Low nitrogen content gas |
D. | Liquid nitrogen gas |
Answer» B. Liquid natural gas | |
39. |
In valley filling, the incremental costs during peak hours are |
A. | Less than the average costs of electricity |
B. | More than the average costs of electricity |
C. | Equal to the average cost of electricity |
D. | None of these |
Answer» B. More than the average costs of electricity | |
40. |
In the given options, the non-commercial source of energy is |
A. | Coal |
B. | Lignite |
C. | Firewood |
D. | Refined petroleum products |
Answer» E. | |
41. |
In passive potential energy strategies, |
A. | There is no systematic planning |
B. | Measures with low profitability is not considered |
C. | One should have high knowledge of the energy price |
D. | All of these |
Answer» B. Measures with low profitability is not considered | |
42. |
In order to improve the power factor of equipment operating at lagging power factor, a capacitor is connected |
A. | In series with the equipment |
B. | In parallel with the equipment |
C. | In series-parallel with the equipment |
D. | Either (a) or (b) |
Answer» C. In series-parallel with the equipment | |
43. |
IFMA stands for |
A. | International Facility Management Association |
B. | Indian Facility Management Association |
C. | International Facility Management Academy |
D. | Indian Facility Management Academy |
Answer» B. Indian Facility Management Association | |
44. |
If the load current decreases then the power factor |
A. | Will also decrease |
B. | Will increase |
C. | Will remains unchanged |
D. | None of these |
Answer» C. Will remains unchanged | |
45. |
If power factor is less than unity then it will result in |
A. | Large kVA rating of equipment |
B. | Greater conductor size |
C. | Large copper losses |
D. | Only A and C |
E. | All of these |
Answer» F. | |
46. |
If L is the value of equipment at the end of its useful life, n is the number of years of useful life equipment and P is the initial cost than the annual depreciation rate is given by |
A. | ( P - L ) / n |
B. | ( p - n ) / L |
C. | ( L - n ) / P |
D. | n / ( L - P ) |
Answer» B. ( p - n ) / L | |
47. |
If an alternator is supplying load of 350 kW at 0.6 pf lagging and its power factor is raised to unity then to supply the alternator for the same kVA loading, the extra required kilowatts will be |
A. | 205 kW |
B. | 212 kW |
C. | 233 kW |
D. | 246 kW |
Answer» D. 246 kW | |
48. |
For voltage boosting in distribution networks the capacitors used is |
A. | Series capacitors |
B. | Shunt capacitors |
C. | Both (a) and (b) |
D. | None of these |
Answer» B. Shunt capacitors | |
49. |
For a typical AC power supply, the secondary transmission carries the voltage of |
A. | 11kV |
B. | 33 kV |
C. | 66 kV |
D. | 132 kV |
Answer» C. 66 kV | |
50. |
EPRI stands for |
A. | European power research institute |
B. | Electrical power Russian institute |
C. | Electrical power research institute |
D. | Electrical power research industries |
Answer» D. Electrical power research industries | |