Electrical Engineering · Question Bank
Transmission Lines
168 questions · page 7 of 9. Answer in your head first, then check the solution.
#121📘 EE Pocket Reviewer RojasEasy
Which statement below is correct about the line loss of a transmission line for a given power?
AIt is inversely proportional to supply voltage and power factor
BIt is directly proportional to supply voltage and inversely proportional to power factor
CIt is inversely proportional to supply voltage and directly proportional to power factor
DIt is directly proportional to supply voltage and power factor
#122📘 EE Pocket Reviewer RojasEasy
What type of conductors are used in overhead transmission lines?
ASolid
BStranded
CHollow
DEither solid or stranded
#123📘 EE Pocket Reviewer RojasEasy
Skin effect is noticeable only at what frequency?
ALow frequency
BHigh frequency
CResonant frequency
DBelow resonant frequency
#124📘 EE Pocket Reviewer RojasEasy
What type of steel is used in a steel cored conductors?
AHigh speed steel
BStainless steel
CLow carbon steel
DMild steel
#125📘 EE Pocket Reviewer RojasEasy
Which of the following parameters is neglected in a short transmission line?
ACapacitance
BInductance
CResistance
DNone of these
#126📘 EE Pocket Reviewer RojasEasy
Skin effect exists only on which of the following?
AHigh voltage DC overhead transmission
BLow voltage DC overhead transmission
CCables carrying dc current
DAC transmission
#127📘 EE Pocket Reviewer RojasEasy
Which type of poles are used to carry transformers?
AI-type
BH-type
CY-type
DA-type
#128📘 EE Pocket Reviewer RojasEasy
Which of the following are the stages in providing electrical energy to a consumer?
AGeneration, distribution and dissipation
BGeneration, distribution and transmission
CGeneration, transmission and distribution
DTransmission, generation and distribution
#129📘 EE Pocket Reviewer RojasEasy
What is the purpose of a booster in transmission lines?
ATo increase the current
BTo reduce current
CTo reduce the voltage drop
DTo compensate for voltage drop
#130📘 EE Pocket Reviewer RojasEasy
In a power system, the feeder is feeding power to which one?
ADistributors
BSub-stations
CGenerating stations
DTransmission lines
#131📘 EE Pocket Reviewer RojasEasy
Due to which of the following reasons aluminum is being favored as busbar material?
ALow density
BLow cost
CEasier to fabricate
DAll of these
#132📘 EE Pocket Reviewer RojasEasy
What is a “guy wire”?
AA short piece of wire used for tying wires into the supporting insulators
BA wire use to connect the ground conductor to the ground plate buried under earth
CA short wire used to temporary connect transmission wires accidentally opened
DA wire used to support the poles
#133📘 EE Pocket Reviewer RojasEasy
The cross arms of a transmission line are made from what material?
#134📘 EE Pocket Reviewer RojasEasy
If the height of the transmission tower is increased, which of the following transmission parameters is likely to change?
AResistance of the line
BInductance of the line
CCapacitance of the line
DAll of these
#135📘 EE Pocket Reviewer RojasEasy
Which of the following will reduce the skin effect of a conductor?
AResistivity of the conductor material increases
BPermeability of the conductor material increases
CFrequency of the ac current increases
DCross sectional area of the conductor increases
#136📘 EE Pocket Reviewer RojasEasy
Which of the following are the composition of a low tension distribution system?
AFeeders, distributors and service mains
BFeeders, transformers and distributors
CTransmission lines, distributors and feeders
DTransmission lines, transformers and feeders
#137📘 EE Pocket Reviewer RojasEasy
What is the material generally used for the armor of high voltage cables?
AAluminum
BSteel
CBrass
DCopper
#138📘 EE Pocket Reviewer RojasEasy
Which distribution system is more reliable?
ARing main system
BRadial system
CTree system
DAll of these
#139📘 EE Pocket Reviewer RojasEasy
Which of the following materials is not used for transmission and distribution of electrical power?
ACopper
BAluminum
CSteel
DTungsten
#140📘 EE Pocket Reviewer RojasEasy
Which of the following is a benefit when transmission line conductors are transposed?
ATo prevent short circuit between any two line conductors
BTo prevent interference with neighboring telephone lines
CTo reduce copper loss
DTo reduce skin effect
More Electrical Engineering topics
