EGR 102 Test 3-Questions with Complete Solutions
which of the following statements is not correct?
unlike charges that are always attractive, two masses separated by a distance can attract or repel.
a step-up transformer steps up (the)
voltage
a magnetohydrodynamic power generator
converts the heat of combustion of coal directly to electrical energy
the kilowatt is a unit of
power
the kilowatt-hour is a unit of
energy
which of the following represents energy?
a) electric voltage
b) electric current
c) electron-volt
d) electric charge
e) all of the above
Electron-volt
which of the following represent(s) power?
, kilowatts
what isthe unit used by most utility companies when they sell electricity to our homes?
kilowatt-hours
how much of the energy burned in a typical power plant is discarded as heat?
70-90%???
in the US most electricity is generated by
burning coal
the baseload of daily energy consumption represents
the load required to provide minimal needs of consumers
baseload poer plants are used
primarily during the nighttime
gas turbines are best suited for power generation
during peak hours and emergencies
in the us when is peak electricity demand in the summer?
noon-3:00pm
most electrical power transmission is in the form of an alternating current because
Generally, it can be transmitted with less transmission loss OR it is cheaper to produce --not sure
which
to maximize power disipation through a given resistance heater, we must
which of the following statements is not correct?
unlike charges that are always attractive, two masses separated by a distance can attract or repel.
a step-up transformer steps up (the)
voltage
a magnetohydrodynamic power generator
converts the heat of combustion of coal directly to electrical energy
the kilowatt is a unit of
power
the kilowatt-hour is a unit of
energy
which of the following represents energy?
a) electric voltage
b) electric current
c) electron-volt
d) electric charge
e) all of the above
Electron-volt
which of the following represent(s) power?
, kilowatts
what isthe unit used by most utility companies when they sell electricity to our homes?
kilowatt-hours
how much of the energy burned in a typical power plant is discarded as heat?
70-90%???
in the US most electricity is generated by
burning coal
the baseload of daily energy consumption represents
the load required to provide minimal needs of consumers
baseload poer plants are used
primarily during the nighttime
gas turbines are best suited for power generation
during peak hours and emergencies
in the us when is peak electricity demand in the summer?
noon-3:00pm
most electrical power transmission is in the form of an alternating current because
Generally, it can be transmitted with less transmission loss OR it is cheaper to produce --not sure
which
to maximize power disipation through a given resistance heater, we must
