MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 159 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
Which of the following is an advantage of static capacitor for power factor improvement ?$? |
| A. | Little maintenance cost |
| B. | Ease in installation |
| C. | Low losses |
| D. | All of the above |
| Answer» E. | |
| 102. |
_______ is invariably used as base load plant.$? |
| A. | Diesel engine plant |
| B. | Nuclear power plant |
| C. | Gas turbine plant |
| D. | Pumped storage plant |
| Answer» C. Gas turbine plant | |
| 103. |
Annual depreciation as per straight line method, is calculated by |
| A. | the capital cost divided by number of year of life |
| B. | the capital cost minus the salvage value, is divided by the number of years of life |
| C. | increasing a uniform sum of money per annum at stipulated rate of interest |
| D. | none of the above |
| Answer» C. increasing a uniform sum of money per annum at stipulated rate of interest | |
| 104. |
Static capacitors are rated in terms of |
| A. | kW |
| B. | kWh |
| C. | kVAR |
| D. | none of the above |
| Answer» D. none of the above | |
| 105. |
In a power plant if the maximum demand on the plant is equal to the plant capacity, then |
| A. | Plant reserve capacity will be zero |
| B. | Diversity factor will be unity |
| C. | Load factor will be unity |
| D. | Load factor will be nearly 60% |
| Answer» B. Diversity factor will be unity | |
| 106. |
The load factor of domestic load is usually |
| A. | 10 to 15% |
| B. | 30 to 40% |
| C. | 50 to 60% |
| D. | 60 to 70% |
| Answer» B. 30 to 40% | |
| 107. |
Incase of ______ fuel transportation is the major problem. |
| A. | diesel power plants |
| B. | nuclear power plants |
| C. | hydro-electric power plants |
| D. | thermal power plants |
| Answer» E. | |
| 108. |
Annual depreciation of the plant it proportional to the earning capacity of the plant vide |
| A. | sinking fund depreciation |
| B. | straight line depreciation |
| C. | reducing balances depreciation |
| D. | none of the above |
| Answer» D. none of the above | |
| 109. |
The expected useful life of an hydroelectric power station is around |
| A. | 15 years |
| B. | 30 years |
| C. | 60 years |
| D. | 100 years |
| Answer» E. | |
| 110. |
Load curve is useful in deciding the |
| A. | operating schedule of generating units |
| B. | sizes of generating units |
| C. | total installed capacity of the plant |
| D. | all of the above |
| Answer» E. | |
| 111. |
Diversity factor has direct effect on the |
| A. | fixed cost of unit generated |
| B. | running cost of unit generated |
| C. | both (A) and (B) |
| D. | neither (A) nor (B) |
| Answer» B. running cost of unit generated | |
| 112. |
Which of the following source of power is least reliable ? |
| A. | Solar energy |
| B. | Geothermal power |
| C. | Wind power |
| D. | MHD |
| Answer» D. MHD | |
| 113. |
A synchronous condenser is virtually which of the following? |
| A. | Induction motor |
| B. | Under excited synchronous motor |
| C. | Over excited synchronous motor |
| D. | D.C. generator |
| Answer» D. D.C. generator | |
| 114. |
Most efficient plants are normally used as |
| A. | peak load plants |
| B. | base load plants |
| C. | either (A) or (B) |
| D. | none of the above |
| Answer» C. either (A) or (B) | |
| 115. |
For any type of consumer the ideal tariff is |
| A. | two part tariff |
| B. | three part tariff |
| C. | block rate tariff |
| D. | any of the above |
| Answer» C. block rate tariff | |
| 116. |
Which of the following is the essential requirement of peak load plant? |
| A. | It should run at high speed |
| B. | It should produce high voltage |
| C. | It should be small in size |
| D. | It should be capable of starting quickly |
| Answer» E. | |
| 117. |
In a load curve the highest point represents |
| A. | peak demand |
| B. | average demand |
| C. | diversified demand |
| D. | none of the above |
| Answer» B. average demand | |
| 118. |
Depreciation charges are high in case of |
| A. | thermal plant |
| B. | diesel plant |
| C. | hydroelectric plant |
| D. | none of the above |
| Answer» B. diesel plant | |
| 119. |
High load factor indicates |
| A. | cost of generation per unit power is increased |
| B. | total plant capacity is utilised for most of the time |
| C. | total plant capacity is not properly utilised for most of the time |
| D. | none of the above |
| Answer» C. total plant capacity is not properly utilised for most of the time | |
| 120. |
The connected load of a IVMIM uir consumer is around |
| A. | 5 kW |
| B. | 40 kV |
| C. | 80 kW |
| D. | 120 kW |
| Answer» B. 40 kV | |
| 121. |
Which of the following is not necessarily an advantage of interconnecting various power stations? |
| A. | Improved frequency of power supplied |
| B. | Reduction in total installed capacity |
| C. | Increased reliability |
| D. | Economy in operation of plants |
| Answer» B. Reduction in total installed capacity | |
| 122. |
Load factor of a power station is generally |
| A. | equal to unity |
| B. | less than unity |
| C. | more than unity |
| D. | equal to zero Diversity factor is always |
| Answer» C. more than unity | |
| 123. |
With reference to a power station which of the following is not a fixed cost? |
| A. | Fuel cost |
| B. | Interest on capital |
| C. | Insurance charges |
| D. | Depreciation |
| Answer» B. Interest on capital | |
| 124. |
For a power plant which of the following constitutes running cost? |
| A. | Cost of wages |
| B. | Cost of fuel |
| C. | Cost of lubricants |
| D. | All of the above |
| Answer» E. | |
| 125. |
Which of the following place is not associated with nuclear power plants in India ? |
| A. | Narora |
| B. | Tarapur |
| C. | Kota |
| D. | Benglore |
| Answer» E. | |
| 126. |
Power plant having maximum demand more than the installed rated capacity will have utilisation factor |
| A. | equal to unity |
| B. | less than unity |
| C. | more than unity |
| D. | none of the above |
| Answer» D. none of the above | |
| 127. |
Which of the following power plants need the least period for installation ? |
| A. | Thermal power plant |
| B. | Diesel power plant |
| C. | Nuclear power plant |
| D. | Hydro-electric power plant |
| Answer» C. Nuclear power plant | |
| 128. |
A pilot exciter is provided on generators for which of the following reasons ? |
| A. | To excite the poles of main exciter |
| B. | To provide requisite starting torque to main exciter |
| C. | To provide requisite starting torque to generator |
| D. | None of the above |
| Answer» B. To provide requisite starting torque to main exciter | |
| 129. |
Generators for peak load plants are usually designed for maximum efficiency at |
| A. | 25 to 50 percent full load |
| B. | 50 to 75 percent full load |
| C. | full load |
| D. | 25 percent overload |
| Answer» C. full load | |
| 130. |
For high value of diversity factor, a power station of given installed capacity will be in a position to supply |
| A. | Less number of consumers |
| B. | More number of consumers |
| C. | Neither (A) nor (B) |
| D. | Either (A) or (B) |
| Answer» C. Neither (A) nor (B) | |
| 131. |
Which of the following are not repayable after a stipulated period ? |
| A. | Shares |
| B. | Fixed deposits |
| C. | Cash certificates |
| D. | Bonds |
| Answer» B. Fixed deposits | |
| 132. |
A power transformer is usually rated in |
| A. | kW |
| B. | kVAR |
| C. | kWh |
| D. | kVA |
| Answer» E. | |
| 133. |
Which of the following equipment provides fluctuating load? |
| A. | Exhaust fan |
| B. | Lathe machine |
| C. | Welding transformer |
| D. | All of the above |
| Answer» D. All of the above | |
| 134. |
Which of the following is not a source of power ? |
| A. | Thermocouple |
| B. | Photovoltaic cell |
| C. | Solar cell |
| D. | Photoelectric cell |
| Answer» B. Photovoltaic cell | |
| 135. |
Air will not be the working substance in which of the following ? |
| A. | Closed cycle gas turbine |
| B. | Open cycle gas turbine |
| C. | Diesel engine |
| D. | Petrol engine |
| Answer» B. Open cycle gas turbine | |
| 136. |
Following power plant has instant starting |
| A. | nuclear power plant |
| B. | hydro power plant |
| C. | diesel power plant |
| D. | both (B) and (C) |
| E. | none of the above |
| Answer» E. none of the above | |
| 137. |
The increased load during summer months is due to |
| A. | increased business activity |
| B. | increased water supply |
| C. | increased use of fans and air conditioners |
| D. | none of the above |
| Answer» D. none of the above | |
| 138. |
offers the highest electric load. |
| A. | Television set |
| B. | Toaster |
| C. | Vacuum cleaner |
| D. | Washing machine |
| Answer» C. Vacuum cleaner | |
| 139. |
In power plants insurance cover is provided for which of the following ? |
| A. | Unskilled workers only |
| B. | Skilled workers only |
| C. | Equipment only |
| D. | All of the above |
| Answer» E. | |
| 140. |
A load curve indicates |
| A. | average power used during the period |
| B. | average kWh (kW) energy consumption during the period |
| C. | either of the above |
| D. | none of the above |
| Answer» C. either of the above | |
| 141. |
Ships are generally powered by |
| A. | nuclear power plants |
| B. | hydraulic turbines |
| C. | diesel engines |
| D. | steam accumulators |
| E. | none of the above |
| Answer» D. steam accumulators | |
| 142. |
Load shedding is possible through which of the following ? |
| A. | Switching of the loads |
| B. | Frequency reduction |
| C. | Voltage reduction |
| D. | Any of the above |
| Answer» E. | |
| 143. |
Different generating stations use following prime movers |
| A. | Diesel engine |
| B. | Hydraulic turbine |
| C. | Gas turbine |
| D. | Any of the above |
| Answer» E. | |
| 144. |
Which of the following should be used for extinguishing electrical fires ? |
| A. | Water |
| B. | Carbon tetrachloride fire extinguisher |
| C. | Foam type fire extinguisher |
| D. | CO2 fire extinguisher |
| Answer» C. Foam type fire extinguisher | |
| 145. |
When the demand of consumers is not met by a power plant, it will resort to which of the following ? |
| A. | Load shedding |
| B. | Power factor improvement at the , generators |
| C. | Penalising high load consumers by increasing the charges for electricity |
| D. | Efficient plant operation |
| Answer» B. Power factor improvement at the , generators | |
| 146. |
A nuclear power plant is invariably used as a |
| A. | peak load plant |
| B. | base load plant |
| C. | stand-by plant |
| D. | spinning reserve plant |
| E. | any of the above |
| Answer» C. stand-by plant | |
| 147. |
_______ will offer the least load. |
| A. | Vacuum cleaner |
| B. | Television |
| C. | Hair dryer |
| D. | Electric shaver |
| Answer» E. | |
| 148. |
Submarines for under water movement, are powered by which of the following ? |
| A. | Steam accumulators |
| B. | Air motors |
| C. | Diesel engines |
| D. | Batteries |
| Answer» E. | |
| 149. |
Which of the following component, in a steam power plant, needs maximum maintenance attention? |
| A. | Steam turbine |
| B. | Condenser |
| C. | Water treatment plant |
| D. | Boiler |
| Answer» E. | |
| 150. |
Which of the following is the disadvantage due to low power factor ? |
| A. | Poor voltage regulation |
| B. | Increased transmission losses |
| C. | High cost of equipment for a given load |
| D. | All of the above |
| Answer» E. | |