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83 of 83 questions match · page 1 of 5. Answer in your head first, then check the solution.

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#1📘 EE Pocket Reviewer RojasEasy
A fuse is connected in ____ with the load.
AParallel
BSeries
CSeries-parallel
DParallel-series
#2📘 EE Pocket Reviewer RojasEasy
What is the purpose of a “reverse power relay”?
ATo reverse the rotation of a generator
BTo reverse the rotation of a motor
CTo protect the generator from a power reversal
DTo change AC to DC or DC to AC
#3📘 EE Pocket Reviewer RojasEasy
For the protection of the stator windings of an alternator against internal fault involving ground, which of the following relays are used?
ABiased differential relay
BPlain impedance relay
CDirectional overcurrent relay
DBuchholz relay
#4📘 EE Pocket Reviewer RojasEasy
Which of the following relays will operate in the event of failures of the prime mover driving the alternator?
AReverse power relay
BDifferential relay
CBuchholz relay
DOverload relay
#5📘 EE Pocket Reviewer RojasEasy
A lightning arrester is usually located where?
ANear a transformer
BNear an isolator
CNear a circuit breaker
DNear a generator
#6📘 EE Pocket Reviewer RojasEasy
A circuit is disconnected by isolators, in which of the following conditions?
AWhen the line is energized
BWhen there is no current in the line
CWhen the line circuit breaker is not open
DWhen the line is fully loaded
#7📘 EE Pocket Reviewer RojasEasy
In dwelling units, the main switchgear is normally located where?
AIn the kitchen
BAt the intake position
CIn the living room, accessible to everybody
DAt any place, as long as it is out of reach of children
#8📘 EE Pocket Reviewer RojasEasy
Which of the following equipment is used to limit short circuit current level in a substation?
AIsolator
BCoupling capacitor
CLightning switch
DSeries reactor
#9📘 EE Pocket Reviewer RojasEasy
Lightning arresters are used in power systems to protect electrical equipment against which one?
ADirect stroke of lightning
BPower frequency overvoltage
COvervoltages due to indirect lightning strokes
DOvercurrents due to lightning stroke
#10📘 EE Pocket Reviewer RojasEasy
Impedance relay is used on which of the following type of transmission lines?
AShort lines
BMedium lines
CLong lines
DDistribution lines
#11📘 EE Pocket Reviewer RojasEasy
Which of the following is the protective device against lightning overvoltages?
ARod gaps
BHorn gaps
CSurge absorbers
DAll of these
#12📘 EE Pocket Reviewer RojasEasy
Earthing is necessary to give protection against which one?
AOverloading
BVoltage fluctuations
CDanger of electric shock
DHigh temperature of the conductors
#13📘 EE Pocket Reviewer RojasEasy
The arcing contacts in a circuit breaker are made from which materials?
ASilver alloys
BCopper tungsten alloys
CAluminum alloys
DManganin alloys
#14📘 EE Pocket Reviewer RojasEasy
What is the main function of a fuse?
ATo prevent excessive currents
BTo protect the line
CTo open the circuit
DTo protect the appliance
#15📘 EE Pocket Reviewer RojasEasy
Testing a blown cartridge fuse by connecting a test lamp from one clip to the other of the suspected fuse will always indicate a ____.
AGood fuse if lamp remains dark
BGood fuse if lamp lights up
CBlown fuse if lamp remains dark
DBlown fuse if lamp lights up
#16📘 EE Pocket Reviewer RojasEasy
The rating of a fuse wire is given in which of the following units?
AKWh
BAmperes
CAmpere-hour
DVolt-amperes
#17📘 EE Pocket Reviewer RojasEasy
The Merz-Price protection is suitable in which of the following applications?
AIn transformers
BIn alternators
CIn feeders
DIn the transmission lines
#18📘 EE Pocket Reviewer RojasEasy
Which of the following is not a method used in arc dispersion?
AOil immersion of contacts
BMagnetic blow out of arc
CDe-ionization of the arc path
DUse of rectifier
#19📘 EE Pocket Reviewer RojasEasy
The breaking capacity of a circuit breaker is expressed in which of the following units?
AKiloamperes
BKilovolts
CMVA
DMW
#20📘 EE Pocket Reviewer RojasEasy
Which of the following is a basic function of a circuit breaker?
ATo create the arc
BTo transmit voltage by arcing
CTo extinguish the arc
DTo ionize the surrounding air

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