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The area under a load curve gives?
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Mar 20, 2018
by
anonymous
area
load
curve
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answered
Mar 20, 2018
by
anonymous
The area under a load curve gives
energy consumed.
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Related questions
asked
Mar 20, 2018
by
anonymous
In a load curve the highest point represents?
Last answer:
In a load curve the highest point represents peak demand.
load
curve
highest
point
represents
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1
answer
asked
Mar 20, 2018
by
anonymous
A load curve indicates?
Last answer:
A load curve indicates average kWh (kW) energy consumption during the period.
load
curve
indicates
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1
answer
asked
Mar 20, 2018
by
anonymous
Load curve is useful in deciding the?
Last answer:
Load curve is useful in deciding the operating schedule of generating units, sizes of generating units, total installed capacity of the plant.
load
curve
useful
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1
answer
asked
Apr 30, 2018
by
anonymous
The load duration curve for unity load factor will be of
The load duration curve for unity load factor will be of (1) Rectangular shape (2) Triangular shape (3) L -shape (4) I -shape
Last answer:
The load duration curve for unity load factor will be of Rectangular shape
load
duration
curve
unity
factor
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235
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1
answer
asked
Sep 8, 2018
by
anonymous
Explain with diagram load duration curve.
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.
diagram
load
duration
curve
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2
answers
asked
Apr 29, 2018
by
anonymous
Equal area criterion gives the information regarding
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
equal
area
criterion
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1
answer
asked
Apr 30, 2018
by
anonymous
The 'Equal area criterion' for the determination of transient stability of a synchronous machine connected to
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 and shunt capacitances. (2) assumes accelerating power acting on the rotor as constant. (3) ignores the effect of voltage ... inherent damping present in the machine. (4) takes into consideration the possibility of machine losing synchronism after it has survived during the first swing.
Last answer:
1
equal
area
criterion
transient
stability
synchronous
machine
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2
answers
asked
Apr 29, 2018
by
anonymous
What happens to the resistance of a wire when its length as well as the cross-sectional area are doubled?
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
resistance
length
cross-sectional
area
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3
answers
asked
Apr 26, 2018
by
anonymous
lt the length, number of turns and area of a coil are doubled, the inductance of the coil
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
length
number
turns
area
coil
doubled
inductance
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1
answer
asked
Mar 25, 2018
by
anonymous
If the area of hysteresis loop of a material is large, the hysteresis loss in this material will be?
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.
area
hysteresis
loop
material
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216
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1
answer
asked
Aug 5, 2019
by
anonymous
Compare variable head flow meter with variable area flow meter.
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.
variable
head
flow
meter
area
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1
answer
asked
Apr 28, 2018
by
anonymous
In electric traction for a trapezoidal speed-time curve, the time period is
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
electric
traction
trapezoidal
speed-time
curve
time
period
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1
answer
asked
Mar 22, 2018
by
anonymous
When a bogie negotiates a curve, reduction in adhesion occurs resulting in sliding. Thus sliding is acute when?
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.
bogie
negotiates
curve
reduction
adhesion
resulting
sliding
acute
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1
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asked
Apr 30, 2018
by
anonymous
In quadrilateral speed-time curve of electric traction system, the accelerations during successive time periods
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.
quadrilateral
speed-time
curve
electric
traction
system
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1
answer
asked
Aug 3, 2019
by
anonymous
Draw and explain integrated duration curve used in system operation.
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.
integrated
duration
curve
system
operation
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1
answer
asked
Apr 28, 2018
by
anonymous
Trapezoidal speed-time curve is
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) a close approximation of the conditions 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.
trapezoidal
speed-time
curve
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1
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asked
Nov 15, 2017
by
anonymous
write short notes on BH curve.
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)
bh
curve
notes
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3
answers
asked
Mar 20, 2018
by
anonymous
The maximum constant load torque under which a synchronous motor will pull into synchronism...
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.
maximum
constant
load
torque
synchronous
motor
synchronism
rated
rotor
supply
voltage
frequency
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1
answer
asked
Apr 29, 2018
by
anonymous
In order to have a lower cost of electrical energy generation the load factor
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
lower
cost
electrical
energy
generation
load
factor
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1
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asked
Mar 20, 2018
by
anonymous
Load factor of a power station is generally?
Last answer:
Load factor of a power station is generally less than unity.
load
factor
power
station
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1
answer
asked
Mar 20, 2018
by
anonymous
Load factor of a power station is defined as?
Last answer:
Load factor of a power station is defined as average load/maximum demand.
load
factor
power
station
defined
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1
answer
asked
Mar 19, 2018
by
anonymous
The efficiency of two identical transformers under load conditions can be determined by?
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.
efficiency
identical
transformers
load
conditions
determined
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110
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1
answer
asked
Jul 24, 2019
by
anonymous
Explain the concept of following terms : (i) Connected load (ii) Maximum demand
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.
connected
load
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1
answer
asked
Mar 20, 2018
by
anonymous
Generating capacity connected to the bus bars and ready to take load when switched on is known as ?
Last answer:
Generating capacity connected to the bus bars and ready to take load when switched on is known as spinning reserve.
generating
capacity
bus
bars
load
switched
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112
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1
answer
asked
Mar 20, 2018
by
anonymous
The increased load during summer months is due to?
Last answer:
The increased load during summer months is due to increased use of fans and air conditioners.
increased
load
summer
months
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1
answer
asked
Mar 20, 2018
by
anonymous
The load factor of domestic load is usually?
Last answer:
The load factor of domestic load is usually 10 to 15%.
load
factor
domestic
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120
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1
answer
asked
Jul 24, 2019
by
anonymous
Compare base load plant with peak load plant.
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.
peak
load
plant
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87
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1
answer
asked
Mar 20, 2018
by
anonymous
_______ is invariably used as base load plant.
Last answer:
Nuclear power plant is invariably used as base load plant.
invariably
used
base
load
plant
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1
answer
asked
Mar 20, 2018
by
anonymous
Generators for peak load plants are usually designed for maximum efficiency at?
Last answer:
Generators for peak load plants are usually designed for maximum efficiency at 50 to 75 percent full load.
generators
peak
load
plants
designed
maximum
efficiency
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86
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1
answer
asked
Mar 20, 2018
by
anonymous
Which plant can never have 100 percent load factor ?
Last answer:
Peak load plant can never have 100 percent load factor.
plant
load
factor
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1
answer
asked
Mar 20, 2018
by
anonymous
In two part tariff, variation in load factor will affect?
Last answer:
In two part tariff, variation in load factor will affect operating or running charges.
two
part
tariff
variation
load
factor
affect
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1
answer
asked
Mar 20, 2018
by
anonymous
High load factor indicates?
Last answer:
High load factor indicates total plant capacity is utilised for most of the time.
high
load
factor
indicates
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1
answer
asked
Jul 5, 2019
by
anonymous
Why does the speed of a DC shunt motor decrease as the load increases?
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.
why
does
the
speed
of
a
dc
shunt
motor
decrease
as
load
increases
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views
1
answer
asked
Jun 18, 2018
by
anonymous
An SSB transmitter produces a peak-to-peak voltage of 200 V across a 100 Ω antenna load. What is the Peak
An SSB transmitter produces a peak-to-peak voltage of 200 V across a 100 Ω antenna load. What is the Peak Envelope Power? A) 49.98 W B) 79.98 W C) 99.96 W D) 199.93 W
Last answer:
An SSB transmitter produces a peak-to-peak voltage of 200 V across a 100 Ω antenna load. What is the Peak Envelope Power? A) 49.98 W B) 79.98 W C) 99.96 W D) 199.93 W
ssb
transmitter
peak-to-peak
voltage
antenna
load
peak
envelope
power
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210
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1
answer
asked
Jun 18, 2018
by
anonymous
A zener voltage regulator has load requirements of 12 V and 2 A. The zener diode minimum current
A zener voltage regulator has load requirements of 12 V and 2 A. The zener diode minimum current requirement is 0.2 A. The minimum voltage at input is 24 V. What is the required value of series resistance with source? A) 5.45 Ω B) 6 Ω C) 7.2 Ω D) 6.38 Ω
Last answer:
A zener voltage regulator has load requirements of 12 V and 2 A. The zener diode minimum current requirement is 0.2 A. The minimum voltage at input is 24 V. What is the required value of series resistance with source? A) 5.45 Ω B) 6 Ω C) 7.2 Ω D) 6.38 Ω
zener
voltage
regulator
load
diode
minimum
current
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1
answer
asked
May 8, 2018
by
anonymous
A 40 kVA transformer has a core loss of 400 W and a full load copper loss of 800 W. The
A 40 kVA transformer has a core loss of 400 W and a full load copper loss of 800 W. The proportion of full load at maximum efficiency is
Last answer:
A 40 kVA transformer has a core loss of 400 W and a full load copper loss of 800 W. The proportion of full load at maximum efficiency is 0.707
kva
transformer
core
loss
full
load
copper
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427
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1
answer
asked
May 8, 2018
by
anonymous
A 240 V, dc shunt motor draws 15 A while supplying the rated load at a speed of 80 rad/s.
A 240 V, dc shunt motor draws 15 A while supplying the rated load at a speed of 80 rad/s. The armature resistance is 0.5 W and the field winding resistance is 80 W. The net Voltage across armature resistance at the time of plugging will be
Last answer:
A 240 V, dc shunt motor draws 15 A while supplying the rated load at a speed of 80 rad/s. The armature resistance is 0.5 W and the field winding resistance is 80 W. The net Voltage across armature resistance at the time of plugging will be 474 V
dc
shunt
motor
rated
load
speed
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226
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1
answer
asked
Apr 30, 2018
by
anonymous
Generally in a power system network, the load is represented as a :
Generally in a power system network, the load is represented as a : (A) Constant power in both load flow study and in stability study (B) Constant power in load flow study and constant impedance in stability study (C) Constant power in stability study and constant impedance in load flow study (D) Constant impedance in both load flow study and in stability study
Last answer:
Generally in a power system network, the load is represented as a : Constant power in load flow study and constant impedance in stability study
power
system
network
load
represented
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1
answer
asked
Apr 29, 2018
by
anonymous
In a synchronous generator if the excitation increased from a low value to normal value, with a fixed load
In a synchronous generator if the excitation increased from a low value to normal value, with a fixed load (A) The armature current increases and the power factor decreases (B) The armature current decreases and the power factor also decreases (C) The armature current decreases and the power factor increases but is lagging (D) The armature current decreases and the power factor increases and is leading
Last answer:
In a synchronous generator if the excitation increased from a low value to normal value, with a fixed load The armature current decreases and the power factor increases and is leading
synchronous
generator
excitation
normal
value
fixed
load
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1
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asked
Apr 29, 2018
by
anonymous
A single-phase voltage source square -wave inverter feeds pure inductive load. The waveform of the load current will be
A single-phase voltage source square -wave inverter feeds pure inductive load. The waveform of the load current will be
Last answer:
A single-phase voltage source square -wave inverter feeds pure inductive load. The waveform of the load current will be triangular
single-phase
voltage
source
square-wave
inverter
feeds
pure
inductive
load
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503
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1
answer
asked
Apr 29, 2018
by
anonymous
A 3 -phase, fully controlled, converter is feeding power into a DC load at a constant current of 150 A, the rms
A 3 -phase, fully controlled, converter is feeding power into a DC load at a constant current of 150 A, the rms value of the current flowing through each thyristor of the converter is
Last answer:
A 3 -phase, fully controlled, converter is feeding power into a DC load at a constant current of 150 A, the rms value of the current flowing through each thyristor of the converter is 150/√3
fully
controlled
converter
feeding
power
dc
load
constant
current
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177
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1
answer
asked
Apr 28, 2018
by
anonymous
The sequence components of current of a single-phase load connected to a 3-phase system are
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
sequence
components
current
single-phase
load
connected
3-phase
system
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394
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1
answer
asked
Apr 28, 2018
by
anonymous
The power consumed by a balanced 3-ph load is measured by two-wattmeter method. The meter readings are
The power consumed by a balanced 3-ph load is measured by two-wattmeter method. The meter readings are 8 kW and 4 kW. The power factor of the load is (A) zero (B) 0.5 (C) between zero and 0.5 (D) between 0.5 and unity
Last answer:
The power consumed by a balanced 3-ph load is measured by two-wattmeter method. The meter readings are 8 kW and 4 kW. The power factor of the load is between 0.5 and unity
power
consumed
balanced
load
measured
two-wattmeter
method
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1
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asked
Apr 28, 2018
by
anonymous
The effect of increasing load on a synchronous motor running with normal excitation is
The effect of increasing load on a synchronous motor running with normal excitation is (A) Increase both its Ia and power factor. (B) Decrease Ia, but increase power factor. (C) Increase Ia, but decrease power factor (D) Decrease both Ia and power factor.
Last answer:
The effect of increasing load on a synchronous motor running with normal excitation is Increase Ia, but decrease power factor
effect
load
synchronous
motor
running
normal
excitation
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401
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1
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asked
Mar 25, 2018
by
anonymous
Sparking occurs when a load is switched off because the circuit has high?
Sparking occurs when a load is switched off because the circuit has high?
Last answer:
Sparking occurs when a load is switched off because the circuit has high inductance.
sparking
load
switched
circuit
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100
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1
answer
asked
Mar 25, 2018
by
anonymous
In a lamp load when more than one lamp are switched on the total resistance of the load?
In a lamp load when more than one lamp are switched on the total resistance of the load?
Last answer:
In a lamp load when more than one lamp are switched on the total resistance of the load decreases.
load
lamp
switched
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137
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1
answer
asked
Mar 21, 2018
by
anonymous
The power factor of a single phase load can be calculated if the instruments available are?
Last answer:
The power factor of a single phase load can be calculated if the instruments available are three ammeters or three voltmeters.
power
factor
single
phase
load
calculated
instruments
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135
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2
answers
asked
Mar 20, 2018
by
anonymous
The speed/load characteristics of a universal motor is same as that of?
Last answer:
The speed/load characteristics of a universal motor is same as that of D.C. series motor.
speed
load
characteristics
universal
motor
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69
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1
answer
asked
Mar 19, 2018
by
anonymous
The maximum load that a power transformer can carry is limited by its?
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.
maximum
load
power
transformer
carry
limited
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104
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1
answer
asked
Mar 19, 2018
by
anonymous
In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of?
In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of?
Last answer:
In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of less than 15A.
step-down
transformer
load
current
change
supply
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91
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1
answer
...