# The area under a load curve gives?

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The area under a load curve gives energy consumed.

## Related questions

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Last Answer : In a load curve the highest point represents peak demand.

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Last Answer : Load curve is useful in deciding the operating schedule of generating units, sizes of generating units, total installed capacity of the plant.

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Last Answer : A load curve indicates average kWh (kW) energy consumption during the period.

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Description : Explain with diagram load duration curve.

Last Answer : It is drawn from load curve. It is graph of load (MW/KW) arranged in descending order of magnitude with respect to time.

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Description : The load duration curve for unity load factor will be of  (1) Rectangular shape (2) Triangular shape (3) L -shape (4) I -shape

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Description : Equal area criterion gives the information regarding  (1) stability region (2) absolute stability (3) relative stability (4) swing curves

Last Answer : Equal area criterion gives the information regarding absolute stability

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Description : What is the expression for calculating vertical curve

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Description : Draw and explain integrated duration curve used in system operation.

Last Answer : Diagram of integrated duration curve used in system operation: Explanation:  Integrated duration curve is obtained from load duration curve. It is drawn in between load on Y-axis in KW/MW and the X- ... a particular time of a day can also be shown on a curve which is called as mass curve.

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Description : In quadrilateral speed-time curve of electric traction system, the accelerations during successive time periods are ______ respectively.  (A) positive, negative and negative (B) positive, zero and negative (C) positive, positive and negative (D) positive, negative and zero

Last Answer : In quadrilateral speed-time curve of electric traction system, the accelerations during successive time periods are positive, negative and negative respectively.

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Description : In electric traction for a trapezoidal speed-time curve, the time period is (A) free running speed period = constant speed period (B) free running period = coasting period (C) free running period + coasting period = constant speed period (D) average speed period = scheduled speed period

Last Answer : In electric traction for a trapezoidal speed-time curve, the time period is free running period + coasting period = constant speed period

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Description : Trapezoidal speed-time curve is (A) an exact representation of the conditions in Main-line traction service. (B) an exact representation of the conditions in Suburban traction service. (C) ... in Suburban traction service. (D) a close approximation of the conditions in Mainline traction service.

Last Answer : Trapezoidal speed-time curve is a close approximation of the conditions in Mainline traction service.

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Last Answer : When a bogie negotiates a curve, reduction in adhesion occurs resulting in sliding. Thus sliding is acute when wheel base of axles is more, degree of curvature is more.

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Description : write short notes on BH curve.

Last Answer : The B-H curve is the relation between Flux density B in Wb/m2 (on Y Axis) and H in AT/m (on X axis) It is also known as magnetization characteristics. This curve particularly useful ... occurs. At point A' material gets magnetically saturated and the curve becomes flat (parallel to X axis)

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Last Answer : Sr.No. Points Base load plant Peak load plant  1 Definition The power plant which supplies base load of load curve is known as base load plant The power ... power station   Small capacity storage hydro, pumped storage hydro, gas, diesel power station.

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Last Answer : 1. Connected Load: It is the sum of load of all equipment's connected to supply system which are in use or not in use of each consumer. OR   The sum of connected load of all consumers ... is the maximum load which a consumer uses at a particular time period out of his total connected load.

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Description : In order to have a lower cost of electrical energy generation the load factor  (1) and the diversity factor should be low (2) should be low but the diversity factor should be high (3) should be high but the diversity factor should be low (4) and the diversity factor both should be high

Last Answer : In order to have a lower cost of electrical energy generation the load factor and the diversity factor both should be high

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Last Answer : Nuclear power plant is invariably used as base load plant.

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Last Answer : Generators for peak load plants are usually designed for maximum efficiency at 50 to 75 percent full load.

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Last Answer : Generating capacity connected to the bus bars and ready to take load when switched on is known as spinning reserve.

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Last Answer : The increased load during summer months is due to increased use of fans and air conditioners.

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Last Answer : In two part tariff, variation in load factor will affect operating or running charges.

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Last Answer : High load factor indicates total plant capacity is utilised for most of the time.

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Last Answer : Load factor of a power station is generally less than unity.

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Description : Area Rugs

Last Answer : Buying rugs is more than just investing in a piece of cloth. You get versatility with this household item, for you can use for any room in your home. Also, it comes in different sizes, colors and ... must get an area rug that is at least four feet larger in length and width than your dining table.

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Description : Compare variable head flow meter with variable area flow meter.

Last Answer : Parameter Variable head flowmeter Variable area flowmeter Working principle Restriction or obstacle is placed in the path of flow to create a differential Pressure. The pressure ... viscous fluid slurries and dirty fluids. In laboratories and testing and production lines.

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Description : The 'Equal area criterion' for the determination of transient stability of a synchronous machine connected to an infinite bus  (1) ignores line as well as synchronous machine resistance ... consideration the possibility of machine losing synchronism after it has survived during the first swing.

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Description : What happens to the resistance of a wire when its length as well as the cross-sectional area are doubled? A) It doubles B) It becomes 4 times C) It becomes 2π times D) It remains the same

Last Answer : Automatically the resistivity will increase as they are the factors affecting the resistivity

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Description : lt the length, number of turns and area of a coil are  doubled, the inductance of the coil

Last Answer : lt the length, number of turns and area of a coil are  doubled, the inductance of the coil is quadrupled

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Description : If the area of hysteresis loop of a material is large, the hysteresis loss in this material will be?

Last Answer : If the area of hysteresis loop of a material is large, the hysteresis loss in this material will be large.

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Description : The maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequency is known as?

Last Answer : The maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequency is known as pull-in torque.

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Description : The efficiency of two identical transformers under load conditions can be determined by?

Last Answer : The efficiency of two identical transformers under load conditions can be determined by back-to-back test.

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Description : Explain MCB and ELCB with connection diagram supplying single phase load.

Last Answer : OR OR Explanation: * MCB provides short circuit protection. * MCB provides overload protection * ELCB provides earth fault protection. * MCB is in series with ... occurs, the ELCB cuts off the power within the time of 0.1 sec. automatically to protect the personnel.

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Description : Explain with neat circuit diagrams the procedures to perform no load and blocked rotor tests on three phase induction motor.

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Description :

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Description : Single-phase mid-point controlled rectifier with RL load

Last Answer : Single-phase mid-point controlled rectifier with RL load : The circuit configuration of single-phase midpoint controlled rectifier is shown in the figure. During positive half-cycle of ... some part of next positive half-cycle of voltage with reversed polarity can appear across load.

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Description : Class A Load Commutation

Last Answer : Class A: Load Commutation: The class A or load commutation (also called self-commutation or resonant commutation) is employed in thyristor circuits supplied from DC source. The commutating components include ... biased. Thus the zero-current and reverse-bias cause the thyristor to turn-off.

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Description : Single-phase Midpoint controlled rectifier with Resistive load

Last Answer : Single-phase Midpoint controlled rectifier with Resistive load:  1) During positive half cycle of AC supply, a is positive with respect to b , this makes T1 forward biased and T2 is reverse ... voltage reverses the polarity and T2 is turned off. The operation is as shown in waveforms.

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Description : Define for polyphase circuit (i) Balanced load (ii) Unbalanced load. Draw one example circuit for each type of load.

Last Answer : i) Balanced Load: Balanced three phase load is defined as star or delta connection of three equal impedances having equal real parts and equal imaginary parts.  Example circuit:  ii) ... satisfy the condition of balance, then it is called as unbalanced load.  Example circuit:

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Description : Why does the speed of a DC shunt motor decrease as the load increases?

Last Answer : Because if the load is increasing then the torque must also be increase. If not then the speed of motor will decrease.

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Description : Define the terms: i) Tariff ii) Fuel surcharge iii) Electricity Duty iv) Connected load

Last Answer : i) Tariff: The rate at which a consumer is charged for the consumption of electricity is called as tariff. OR The amount of money framed by the supplier for the supply of electrical energy ... is the total wattage of all appliances which are used by the consumer on his sanctioned connection.

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Description : Define the following terms related to tariff: (i) Connected load (ii) Unit consumed (iii) Fixed charges (iv) Electricity Tax

Last Answer : (i) Connected load  It is the sum of the power ratings (Watts or kW or MW) of all devices and machines existing (installed) in the premises of consumer. It is used to decide the ... a percentage of the total electricity bill which includes all amounts that go to the electricity supply agency.

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Last Answer : i) Residential load: The electrical load which is used in residential installation is called as residential load. E.g. incandescent lamp, florescent tube, fan ,5A socket &15A socket etc.   ii ... 3-ph any type of motor, electric furnace ,oven,welding transformer and any power load etc.

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Description : Compare base load plant with peak load plant on any two points.

Last Answer : Points Base load plant Peak load plant Definition The power plant which supplies base load of load curve is known as base load plant  The power plant which supplies ... ,thermal,nuclear power station Small capacity storage hydro,pumped storage hydro,gas,diesel power station.

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Description : State why nuclear power plants are used as base load plants and diesel power plants as a peak load plant.

Last Answer : 1. Because of following points Nuclear power plant used as base load power plant:-  1. Nuclear power plants is very economical for producing bulk amount of electric power 2. Nuclear power plant is reliable ... . The plants can be put on load easily. 4. Diesel engines take less time to make OFF.

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Description : Define each of following terms: i) Connected load ii) Spinning reserve.

Last Answer : i) Connected Load :- It is the sum of load of all equipment connected to supply system which are in use or not in use of each consumer. ii) Spinning Reserve:- It is reserved generating capacity in operation and connected to bus bar and ready to take a load.

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Description : Define balanced 3 phase load.

Last Answer : Balanced 3 phase Load: Balanced three phase load is defined as star or delta connection of three equal impedances having equal real parts and equal imaginary parts. It takes same current of equal magnitude and equal phase angle.