Saca electrical 201 Exam Questions and
Answers
What should you do before working on electrical equipment? - -Lock out tag out(LOTO)
-What is normally not measured on a digital multi meter? - -Frequency
-Main line current formula in parallel - -1/ 1/R1+1/R2+1/R3
-What is indicated when voltage is measured across the contacts of a switch - -Its open
-What type of transformer is used to get two 120 volt lines from a 480 volt source? - -4:1
center tap
-What is the effect of a capacitor in a DC circuit in a parallel circuit? - -Aids voltage change
-What is the immediate danger of unsecured electrical cords? - -Trip hazard
-Why does most electrical utility power go throughout the world use AC instead of DC? - -
AC is better for transmitting longer distances and it is cheaper to generate.
-When should a fuse be replaced? - -When there is no continuity
-What type of voltage divider is normally used when the load resistance is relatively low? -
-Loaded voltage divider
-What action should be taken when a circuit breaker trips? - -Off then on
-If you add a third capacitor in series with two other capacitors, what would happen to
total capacitance and current. - -The current and capacitance would decrease
-Where are the meter leads placed in a circuit to measure current in a single component or
device. - -In series
-Which type of circuit breaker has a delay before it trips. - -Thermal circuit breaker
-Which output creates a sound as its primary output? - -Buzzer
-What is the best method to verify a piece of equipment is properly grounded? - -Use of
multimeter and check for an open current
-What feature of a ground circuit creates a safe path for current? - -Low resistance path,
connection to earth or ground point
Answers
What should you do before working on electrical equipment? - -Lock out tag out(LOTO)
-What is normally not measured on a digital multi meter? - -Frequency
-Main line current formula in parallel - -1/ 1/R1+1/R2+1/R3
-What is indicated when voltage is measured across the contacts of a switch - -Its open
-What type of transformer is used to get two 120 volt lines from a 480 volt source? - -4:1
center tap
-What is the effect of a capacitor in a DC circuit in a parallel circuit? - -Aids voltage change
-What is the immediate danger of unsecured electrical cords? - -Trip hazard
-Why does most electrical utility power go throughout the world use AC instead of DC? - -
AC is better for transmitting longer distances and it is cheaper to generate.
-When should a fuse be replaced? - -When there is no continuity
-What type of voltage divider is normally used when the load resistance is relatively low? -
-Loaded voltage divider
-What action should be taken when a circuit breaker trips? - -Off then on
-If you add a third capacitor in series with two other capacitors, what would happen to
total capacitance and current. - -The current and capacitance would decrease
-Where are the meter leads placed in a circuit to measure current in a single component or
device. - -In series
-Which type of circuit breaker has a delay before it trips. - -Thermal circuit breaker
-Which output creates a sound as its primary output? - -Buzzer
-What is the best method to verify a piece of equipment is properly grounded? - -Use of
multimeter and check for an open current
-What feature of a ground circuit creates a safe path for current? - -Low resistance path,
connection to earth or ground point
