In a power generating station the Demand Factor and Load Factor are 0.5 and 0.2, respectively. If the connected load is 400 MW, the average demand is 40 MW
Description : A generating station has a maximum demand of 30 MW, a load factor of 60% and a plant capacity factor of 50%. The reserve capacity of the plant is (a) 5 MW (b) 4 MW (c) 6 MW (d) 10 MW
Last Answer : A generating station has a maximum demand of 30 MW, a load factor of 60% and a plant capacity factor of 50%. The reserve capacity of the plant is 6 MW
Description : A generating station has a maximum demand of 500 MW. The annual load factor is 50 percent. The energy generated per annum will be: A) 2.19 x 106 MWhr B) 600 MWhr C) 250 MWhr D) 7.50 x 106 MWhr
Last Answer : A generating station has a maximum demand of 500 MW. The annual load factor is 50 percent. The energy generated per annum will be: 2.19 x 106 MWhr
Description : A generating station has a maximum demand of 50 Mw, a load factor of 60%, a plant capacity factor of 45% and if the plant while running as per schedule, were fully loaded. The daily energy produced will be
Last Answer : A generating station has a maximum demand of 50 Mw, a load factor of 60%, a plant capacity factor of 45% and if the plant while running as per schedule, were fully loaded. The daily energy produced will be 720 MW.
Description : A generating st ation has a maximum, demand of 20 mW, load factor of 60%, a plant capacity factor of 50% and a plant Use factor of 72%. What is the reserve capacity of the plant, if the plant, while running as per schedule, were fully loaded?
Last Answer : 5 MW is the reserve capacity of the plant, if the plant, while running as per schedule, were fully loaded.
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 : ECE Board Exam March 1996 The method of generating FM used by broadcasting station is A. direct B. all of these C. indirect D. insertion
Last Answer : C. indirect
Description : Which of the following quantities has the GREATEST influence on the overall efficiency of a conventional (Rankine cycle) electric generating station burning fossil fuels? w) steam temperature at the steam turbine ... pressure at the steam turbine inlet z) pounds of ash and sulfur per pound of fuel
Last Answer : ANSWER: W -- STEAM TEMPERATURE AT THE STEAM TURBINE INLET
Description : Define the following terms:- Reliability, Maximum demand, Reserve-generating capacity, Availability (operational).
Last Answer : Reliability: It is the capacity of the power system to serve all power demands without failure over long periods. Maximum Demand: It is maximum load demand required in a power station during a given ... percentage of the time a unit is available to produce power whether needed by the system or not.
Description : The marketing function's main concern is with (a) producing goods or providing services ; (b) procuring materials, supplies, and equipment (c) building and maintaining a positive image ; (d) generating the demand for the organization's products or services
Last Answer : (d) generating the demand for the organization's products or services
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 : The maximum demand of consumer is 2 kW and his daily energy consumption is 20 units. Its Load Factor is (1) 10.15% (2) 41.6 % (3) 50 % (4) 60%
Last Answer : Total maximum demand of energy in a day = 2kw*24= 48 units Consumer consumption is 20 units . Load factor = (number of units utilizing)/(total max. demand) = 20/48 = 41.6%
Last Answer : Generating capacity connected to the bus bars and ready to take load when switched on is known as spinning reserve.
Description : A three phase transmission line delivers a load of 5 MW at 0.8 power factor lagging. Resistance of each conductor is 0.5 ohm / km. Receiving end voltage is 33 kV. If the line loss is not to exceed 10%, determine the length of the line. (A) 7 km (B) 27.9 km (C) 56.8 km (D) 13.9 km
Last Answer : B
Description : The connected load of a consumer is 2 kW and his maximum demand is 1.5 kW. The load factor of the consumer is (a) 0.375 (b) 0.75 (c) 1.33 (d) None of these
Last Answer : a
Description : For a short transmission line with r/x ratio of is 1.0, the regulation will be zero when the load power factor is
Last Answer : For a short transmission line with r/x ratio of is 1.0, the regulation will be zero when the load power factor is 0.707 lead
Description : A single phase 60 Hz generator supplies an inductive load of 4500kW at a power factor of 0.80 lagging by means of a 20 km long overhead transmission line. The line resistance and inductance are 0.0195 ohm and 0.60 mH ... voltage regulation of the line. (A) 12.59% (B) 16.34% (C) 32.68% (D) 41.15%
Last Answer : Answer is C
Description : Define the following: Average demand, Maximum demand, Demand factor, Load factor.
Last Answer : Average Demand: the average power requirement during some specified period of time of considerable duration is called the average demand of installation. Maximum Demand: The maximum demand of an installation ... Load Factor: It is defined as the ratio of the average power to the maximum demand.
Description : The ratio of current year‘s production to the reference year‘s production is called as a) Demand factor b) Production factor c) Utilisation factor d) Load factor
Last Answer : Production factor
Description : Which of the following is usually not the generating voltage : - a) 6.6 EV b) 11 KV c) 12.5 KV d) 13.2 KV
Last Answer : Which of the following is usually not the generating voltage : - 12.5 KV
Description : What is "dirty power" and is my space heater generating it?
Last Answer : Harmonics, they are the source of this dirty power you speak of. DC switching power supplies are some of the worst offenders. These are transients and non 60hz frequencies that are generated by said appliance. ... your heater works but I'm guessing it uses some sort of switching to run on low power.
Description : Where are Power Generating Equipment’s manufactured. -SST 10th
Last Answer : They are manufactured at Bhopal by Bharat Heavy Electricals Limited (BHEL).
Description : What the major problems associated with generating electricity using nuclear power plants?
Last Answer : Need answer
Description : What are the major losses in nuclear power generating system?
Last Answer : Condenser - 500 MW. Moderator - 40 MW. C/V and E/S system - 3.7 MW.
Description : A feeder, in a transmission system, feeds power to (a) distributors (b) generating stations (c) service mains (d) all of the above
Last Answer : (a) distributors
Description : At present level of technology, which of the following method of generating electric power from sea is most advantageous? (A) Tidal power. (B) Ocean thermal energy conversion (C) Ocean currents. (D) Wave power.
Last Answer : Ans: A At present level of technology, tidal power for generating electric power from sea is most advantageous because of constant availability of tidal power.
Description : For which of the following reasons is plutonium-238 used for generating electricity on spacecraft? w) It is an alpha emitter with long half-life. x) It is a beta emitter with high specific power. y) It occurs abundantly in nature. z) It has low specific power.
Last Answer : ANSWER: W -- IT IS AN ALPHA EMITTER WITH LONG HALF-LIFE.
Description : Name three conventional ways of generating power. Of these three, which one contributes maximum generation in India.
Last Answer : Coal, Gas and Hydro are the examples of conventional method of generating power. Coal contributes maximum generation in India. India generates 219.81 Gw by thermal power plant (coal).
Description : What will be the efficiency when the transformer operates at unity power factor and 60% of full load
Last Answer : What will be the efficiency when the transformer operates at unity power factor and 60% of full load 96.5%
Description : If the lagging power factor of the load decreases, the line losses will (A) Decrease (B) Increase (C) Flrst decrease and then Increase (D) Remain same
Last Answer : If the lagging power factor of the load decreases, the line losses will Increase
Description : A three-phase star -connected load is operating at a power factor angle ϕ with ϕ being the angle between
Last Answer : A three-phase star -connected load is operating at a power factor angle ϕ with ϕ being the angle between Phase voltage and phase current
Description : A alternator is delivering power to a balanced load at unit power factor. The phase angle between the line voltage and the line current is? (A) 90° (B) 60° (C) 30° (D) 0°
Last Answer : A alternator is delivering power to a balanced load at unit power factor. The phase angle between the line voltage and the line current is 30°
Description : At an industrial sub-station with a 4 MW load, a capacitor of 2 MVAR is installed to maintain the load power factor at 0.97 lagging. If the capacitor goes out of service, the load power factor becomes (A) 0.85 (B) 1.00 (C) 0.80 lag (D) 0.90 lag
Last Answer : At an industrial sub-station with a 4 MW load, a capacitor of 2 MVAR is installed to maintain the load power factor at 0.97 lagging. If the capacitor goes out of service, the load power factor becomes 0.80 lag
Description : A power station supplies the peak load of 60 Mw, 40 MW and 70 MW to three localities. The annual load factor is 0.50 p.u. and the diversity factor of the load at the station is 1.55. The maximum demand on the station and average load respectively will be
Last Answer : A power station supplies the peak load of 60 Mw, 40 MW and 70 MW to three localities. The annual load factor is 0.50 p.u. and the diversity factor of the load at the station is 1.55. The maximum demand on the station and average load respectively will be 103.2 MW, 51.61 .
Description : At full -load of a transformer, the iron loss and copper loss are 3000 W and 4000 W respectively. Then total loss at maximum efficiency is : (A) 7000 W (B) 6000 W (C) 8000 W (D) 4000 W
Last Answer : At full -load of a transformer, the iron loss and copper loss are 3000 W and 4000 W respectively. Then total loss at maximum efficiency is : 6000 W
Last Answer : For high value of diversity factor, a power station of given installed capacity will be in a position to supply more number of consumers.
Description : Demand of water for passengers on railway station is a)10 litres per passenger b)15 litres per passenger c) 20 litres for passenger d) 25 litres per passenger*
Last Answer : d) 25 litres per passenger*
Description : Point elasticity of demand can be useful in which of the following cases (a) A departmental store is thinking of increasing the price of gift packs (b) A service station is considering to ... to lower the monthly membership fee (d) An airlines company is considering to lower holiday packages
Last Answer : (c) A health club is considering to lower the monthly membership fee
Description : Load regulation is a measure of a power supplies ability keep a constant output under conditions of changing A) Line voltage B) Current demand C) Temperature D) Oscillator frequency.
Last Answer : A) Line voltage
Description : A 10-bus power system consists of four generator buses indexed as G1, G2, G3, G4 and six load buses indexed as L2, L2, L3, L4, L5, L6. The generator-bus G1 is connected ... of non linear equations required for solving the load flow problem using Newton-Raphson method in popular form is________.
Last Answer : 14
Description : Which of the following statements is correct concerning the motor performance curves and data table shown in the illustration? EL-0006 A. The motor RPM at full load is 1737 RPM. B. The motor draws 12.62 kw ... If the motor was developing 10 HP its power factor would be 0.92. D. All of the above.
Last Answer : Answer: D
Description : A three-phase alternator is operating at 450 volts, 250 amps at 0.6 power factor. If the power factor increases to 0.8, the kw load potential will increase by _____________. A. 38.525 kw B. 116.91 kw C. 155.88 kw D. 194.85 kw
Last Answer : Answer: A
Description : Which of the following statements is true concerning all three-phase alternators? A. Each has three separate but identical armature windings acted on by one system of rotating magnets. B. Each has one ... The three phases always provide power to the load through three sets of slip rings and brushes.
Description : A two-winding single phase transformer has a voltage regulation of 4.5% at full-load and unity power-factor. At full-load and 0.80 power-factor lagging load the voltage regulation will be (A) 4.5%. (B) less than 4.5%. (C) more than 4.5%. (D) 4.5% or more than 4.5%.
Last Answer : (C) more than 4.5%.
Description : A 3-phase, 11 kv, 50 Hz, 200 kW load has a power factor of 0.8 lag. A delta connected 3-phase capacitor is used to improve the power factor to unity. The capacitance perphase of the capacitor in micro-farads is?
Last Answer : A 3-phase, 11 kv, 50 Hz, 200 kW load has a power factor of 0.8 lag. A delta connected 3-phase capacitor is used to improve the power factor to unity. The capacitance perphase of the capacitor in micro-farads is 1.316.
Description : The individual demand and supply curve of a product are Dx = 12-2px, Sx=3+5px, where Px stand for price and Dx and Sc respectively stands for quantity demanded and quantity supplie(d) If there are 5000 consumers and 1000 suppliers ... be the equilibrium price (a) `4 ; (b) `5 ; (c) `3 ; (d) `4.5
Last Answer : ; (c) `3 ;
Description : The front-end of a television receiver, having a bandwidth of 7Mhz, and operating at a temperature of 27˚C , consists of an amplifier having a gain of 15 followed by a mixer whose gain is 20. The ... equivalent noise resistance for this television receiver. A. 8760 Ω B. 875Ω C. 8.76Ω D. 0.876Ω
Last Answer : B. 875Ω
Description : In working stress method of design, the factor of safety for concrete and steel respectively are [ A ] 3.0 and 1.8 [ B ] 3.0 and 1.18 [ C ] 3.0 and 1.15 [ D ] 1.5 and 1.5
Last Answer : [ A ] 3.0 and 1.8
Description : m and n are monsoon duration factor and catchment factor respectively. If P is yearly rainfall in cm, runoff can be calculated by (A) Velocity area method (B) Weir or spillway method (C) Use of venturi-meter (D) Using power plant consumption
Last Answer : (A) Velocity area method
Description : Brainstorming is used by the management for 1. Work allocation of the shop floor 2. Generating alternative for problem solving 3. The promotion of research and development 4. Training employees 5. None of these
Last Answer : Generating alternative for problem solving