1 Answer

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 connected to the power station or power system. 

2. Maximum Demand: 

It is the maximum load which a consumer uses at a particular time period out of his total connected load. 

Related questions

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. 

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. 

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.

Description : The sequence components of current of a single-phase load connected to a 3-phase system are (A) equal positive and negative sequence components (B) equal positive, negative and zero sequence components (C) vector sum of sequence currents is zero (D) algebraic sum of sequence currents is zero

Last Answer : The sequence components of current of a single-phase load connected to a 3-phase system are equal positive, negative and zero sequence components

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

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

Description : Compare base load plant with peak load plant. 

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. 

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

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

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

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

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

Last Answer : The area under a load curve gives energy consumed.

Last Answer : Peak load plant can never have 100 percent load factor.

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

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

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

Last Answer : The load factor of domestic load is usually 10 to 15%.

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

Last Answer : Load factor of a power station is defined as average load/maximum demand.

Description : Explain Three Phase Bidirectional Delta Connected Controller.

Last Answer : Three Phase Bidirectional Delta Connected Controller:

Description : Power station having Load factor = 70%, capacity factor = 50%, used factor = 60%, maximum demand = 20MW then annual energy production is  (1) 122.8 GWh (2) 198.55 GWh (3) 128.2 GWh (4) 188.82 GWh

Last Answer : Power station having Load factor = 70%, capacity factor = 50%, used factor = 60%, maximum demand = 20MW then annual energy production is 122.8 GWh

Description :  A connected graph has ‘5’ number of branches and ‘4’ number of nodes. It's rank is A) 1 B) 2 C) 3 D) 4 

Last Answer :  A connected graph has ‘5’ number of branches and ‘4’ number of nodes. It's rank is 3 

Description : In an R-C phase shift oscillator, the minimum no. of R-C networks to be connected in cascade will be -

Last Answer : In an R-C phase shift oscillator, the minimum no. of R-C networks to be connected in cascade will be 3

Description : Two 100W, 200V lamps are connected in series across a 200V supply. The total power consumed by each lamp will be in Watts

Last Answer : 4800

Description : Three identical resistors connected in star consume 5000 W. If the resistors are connected in delta across the same supply, the power consumed will be

Last Answer : Three identical resistors connected in star consume 5000 W. If the resistors are connected in delta across the same supply, the power consumed will be 15000 W

Description : A four -quadrant operation requires two full converters connected in  (1) Series (3) Back to back (2) Parallel (4) Series Cascade

Last Answer : A four-quadrant operation requires two full converters connected in Parallel 

Description : Consider a circuit with three parallel branches connected across a DC supply. What is the ratio of the branch currents I1 : I2 : I3 if the branch resistances are in the ratio of 2 : 3 : 4 respectively? A) 2 : 3 : 4 B) 6 : 4 : 3 C) 4 : 3 : 2 D) None of these

Last Answer : Consider a circuit with three parallel branches connected across a DC supply. What is the ratio of the branch currents I1 : I2 : I3 if the branch resistances are in the ratio of 2 : 3 : 4 respectively? A) 2 : 3 : 4 B) 6 : 4 : 3 C) 4 : 3 : 2 D) None of these

Description : When three resistors with unequal values are connected in parallel, _______ A) The current across the resistors is the same  B) The voltage drop across the resistors is the same C) The voltage drops across the resistors is proportional to the resistance of each resistor D) None of these

Last Answer : When three resistors with unequal values are connected in parallel, The voltage drop across the resistors is the same

Description : What is the total resistance if 5 resistors of 20 Ω each are connected in series? A) 100 Ω B) 4 Ω C) 20 Ω D) None of these

Last Answer : What is the total resistance if 5 resistors of 20 Ω each are connected in series? A) 100 Ω B) 4 Ω C) 20 Ω D) None of these

Description : If non-linear loads are connected to the power system, then (A) displacement power factor is same as the total power factor (B) displacement power factor is not equal to the total power ... factor is due to harmonic currents (D) total power factor is due to fundamental component of current

Last Answer : If non-linear loads are connected to the power system, then displacement power factor is not equal to the total power factor

Description :  With three resistances connected in parallel, if each dissipates 20 W the total power supplied by the voltage source equals?

Last Answer : Power is the only thing which is additive in both connection whether it is parallel or series connection so total power consumed will addition of all individual power =20+20+20 = 60 watt

Last Answer : If a D.C. motor is connected across the A.C. supply it will burn due to heat produced in the field winding by eddy currents.

Last Answer : A fuse is connected in series with circuit.

Description : Cells are connected in series in order to?

Last Answer : Cells are connected in series in order to increase voltage available.

Description : A 3-phase voltage source inverter operates in 180° conduction mode with a star connected resistive load. If input dc voltage is 100 V, then the peak to peak output line voltage is :

Last Answer : A 3-phase voltage source inverter operates in 180° conduction mode with a star connected resistive load. If input dc voltage is 100 V, then the peak to peak output line voltage is : 200 V

Last Answer : For given maximum axle load tractive efforts of AC. locomotive will be more than that of D.C. locomotive.

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.

Last Answer : An ideal transformer will have maximum efficiency at a load such that copper loss equal to iron loss.

Description : For a transformer, operating at constant load current, maximum efficiency will occur at?

Last Answer : For a transformer, operating at constant load current, maximum efficiency will occur at unity power factor.

Description : The maximum load that a power transformer can carry is limited by its?

Last Answer : The maximum load that a power transformer can carry is limited by its voltage ratio.

Description : The synchronous motor will develop maximum power when the load angle is?

Last Answer : The synchronous motor will develop maximum power when the load angle is 900.

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:

Description : Define the following: i) Residential load ii) Industrial load

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. 

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. 

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. 

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.

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. 

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.