4th Year Lineman Tests with all Correct & 100% Verified
Answers |Guaranteed to Pass |Already Graded A+
The value of current which will cause fibrillation of the heart, and death if allowed to continue
✔Correct Answer-1/10 amp
For a specific value of voltage, current is inversely proportional to resistance ✔Correct Answer-True
The path of current flow through the body is more likely to take the path of "dermis" layer than the
epidermis ✔Correct Answer-False
The step-up transformer will reduce the current making the transmission of power more economical
✔Correct Answer-True
The biggest disadvantage of an underground system ✔Correct Answer-Finding faults
An insulation medium used for cables over 45 Kv ✔Correct Answer-Oil and Gas
A term referring to the cooperation between utilities for "cost sharing" by using the same structures
or trenches ✔Correct Answer-Joint
The major factor which reduces the reliability of underground systems is "dig in's" ✔Correct
Answer-True
The advantage of plastic for high voltage insulation on underground cable ✔Correct Answer-More
reliable, economical, easier to handle
Give the trigonometric function for solving the angle of the following right triangle ✔Correct
Answer-Sine
The angle for the above right triangle ✔Correct Answer-27Degrees
Give the trigonometric function for solvin z for the following right triangle ✔Correct Answer-Cosine
Calculate the hypotenuse ✔Correct Answer-414
Triangles ✔Correct Answer-Triangles
!24703-phase 4-wire The transformer bank is connected- ✔Correct Answer-Wye
The high side coil voltage is- ✔Correct Answer-7200 volt
The high side coil current- ✔Correct Answer-25kva x 1000 dividd by 7200
= 3.5 amps
The high side line current ✔Correct Answer-3.5 amp
The number of fuses required for this bank ✔Correct Answer-3
, The fuse sizes for the above transformer bank ✔Correct Answer-25Kva x 1000 divided by 7200 =3.5
3.5 x 1.25= 4.4
7200 3phase 3wire 50 kva The above transformer is connected ✔Correct Answer-Delta
High side coil voltage is ✔Correct Answer-7200
The high side coil current is ✔Correct Answer-50kva x 1000 divided by 7200= 6.9 amps
The high side line current ✔Correct Answer-take 6.9 x 1.73 = 11.9 amps use 1.73 for delta and wye
is the same as coil current
The number of fuses this bank requires ✔Correct Answer-3
the fuse sizes for this bank ✔Correct Answer-11.9 x 1.25 = 15 amp
13800 3phase 4wire 10 kva This transformer bank is connected ✔Correct Answer-wye
The high side coil voltage is ✔Correct Answer-7960 volts 13800 divided by 1.73
The high side coil voltage is ✔Correct Answer-10 kva x 1000 divided by 7960. = 1.3 amps
The high side line current is ✔Correct Answer-1.3 amps . They are the same as coil voltage in a wye
bank
The number of fuses required for this bank ✔Correct Answer-3
The fuse sizes are ✔Correct Answer-10x1000 divided by 7960 times 1.25= 1.6 amp
The tank of the transformers are grounded for safety ✔Correct Answer-True
An underground electrical system used on critical loads which has a second source of supply installed
with a throw-over device ✔Correct Answer-Duplicate
Any underground electric system which has the secondary mains from transformers supplied by
several primary feeders ✔Correct Answer-Secondary Network
The method of alignment used on the erection of steel on concrete pads ✔Correct Answer-Plumb
bob and transit
The most reliable underground electrical service ✔Correct Answer-looped system
An underground electric system which has only a single source of feed ✔Correct Answer-Radial
An opposition to current flow in a direct current circuit ✔Correct Answer-Resistance
The unit of measure of impedance ✔Correct Answer-Ohm
A circuit which consists of a resistance and a capacitance ✔Correct Answer-RC circuit
Total opposition to current flow in an alternating current circuit ✔Correct Answer-Impedance
Answers |Guaranteed to Pass |Already Graded A+
The value of current which will cause fibrillation of the heart, and death if allowed to continue
✔Correct Answer-1/10 amp
For a specific value of voltage, current is inversely proportional to resistance ✔Correct Answer-True
The path of current flow through the body is more likely to take the path of "dermis" layer than the
epidermis ✔Correct Answer-False
The step-up transformer will reduce the current making the transmission of power more economical
✔Correct Answer-True
The biggest disadvantage of an underground system ✔Correct Answer-Finding faults
An insulation medium used for cables over 45 Kv ✔Correct Answer-Oil and Gas
A term referring to the cooperation between utilities for "cost sharing" by using the same structures
or trenches ✔Correct Answer-Joint
The major factor which reduces the reliability of underground systems is "dig in's" ✔Correct
Answer-True
The advantage of plastic for high voltage insulation on underground cable ✔Correct Answer-More
reliable, economical, easier to handle
Give the trigonometric function for solving the angle of the following right triangle ✔Correct
Answer-Sine
The angle for the above right triangle ✔Correct Answer-27Degrees
Give the trigonometric function for solvin z for the following right triangle ✔Correct Answer-Cosine
Calculate the hypotenuse ✔Correct Answer-414
Triangles ✔Correct Answer-Triangles
!24703-phase 4-wire The transformer bank is connected- ✔Correct Answer-Wye
The high side coil voltage is- ✔Correct Answer-7200 volt
The high side coil current- ✔Correct Answer-25kva x 1000 dividd by 7200
= 3.5 amps
The high side line current ✔Correct Answer-3.5 amp
The number of fuses required for this bank ✔Correct Answer-3
, The fuse sizes for the above transformer bank ✔Correct Answer-25Kva x 1000 divided by 7200 =3.5
3.5 x 1.25= 4.4
7200 3phase 3wire 50 kva The above transformer is connected ✔Correct Answer-Delta
High side coil voltage is ✔Correct Answer-7200
The high side coil current is ✔Correct Answer-50kva x 1000 divided by 7200= 6.9 amps
The high side line current ✔Correct Answer-take 6.9 x 1.73 = 11.9 amps use 1.73 for delta and wye
is the same as coil current
The number of fuses this bank requires ✔Correct Answer-3
the fuse sizes for this bank ✔Correct Answer-11.9 x 1.25 = 15 amp
13800 3phase 4wire 10 kva This transformer bank is connected ✔Correct Answer-wye
The high side coil voltage is ✔Correct Answer-7960 volts 13800 divided by 1.73
The high side coil voltage is ✔Correct Answer-10 kva x 1000 divided by 7960. = 1.3 amps
The high side line current is ✔Correct Answer-1.3 amps . They are the same as coil voltage in a wye
bank
The number of fuses required for this bank ✔Correct Answer-3
The fuse sizes are ✔Correct Answer-10x1000 divided by 7960 times 1.25= 1.6 amp
The tank of the transformers are grounded for safety ✔Correct Answer-True
An underground electrical system used on critical loads which has a second source of supply installed
with a throw-over device ✔Correct Answer-Duplicate
Any underground electric system which has the secondary mains from transformers supplied by
several primary feeders ✔Correct Answer-Secondary Network
The method of alignment used on the erection of steel on concrete pads ✔Correct Answer-Plumb
bob and transit
The most reliable underground electrical service ✔Correct Answer-looped system
An underground electric system which has only a single source of feed ✔Correct Answer-Radial
An opposition to current flow in a direct current circuit ✔Correct Answer-Resistance
The unit of measure of impedance ✔Correct Answer-Ohm
A circuit which consists of a resistance and a capacitance ✔Correct Answer-RC circuit
Total opposition to current flow in an alternating current circuit ✔Correct Answer-Impedance
