CETa UPDATED COMPREHENSIVE QUESTIONS AND
ANSWERS GRADED A+
✔✔When working at heights above 6 feet, a ______ is required by OSHA rules. -
✔✔Full body harness attached to a lanyard which prevents more than a 6' drop
✔✔Residual voltage is associated with _______.
a. Northern Lights
b. Corona arcing from electrical generators
c. charge retained by inductors
d. charge retained by capacitors - ✔✔d. charge retained by capacitors
✔✔The atomic number of an element is the same as the element's atomic weight - True
or False? - ✔✔False
✔✔An increase in voltage with resistance held constant causes current to _________.
a. decrease
b. increase twice the value of voltage
c. increase
d. none of the above - ✔✔c. increase
✔✔The ampere expresses ________.
a. volts/sec increase
b. a unit of charge movement per second past a given point
c. coulombs/charge
d. an increase in resistance - ✔✔b. a unit of charge movement per second past a given
point
✔✔The total resistance of a parallel circuit containing equal branch resistances is found
by the following:
a. by adding all of the branch resistance values
b. by taking the product of all the branch resistance values
c. by dividing the resistance value of a branch by the number of branches
d. the value cannot be found - ✔✔c. by dividing the resistance value of a branch by the
number of branches
✔✔A 12 VDC power supply has a 15 ohm internal resistance. What load resistance can
be connected to transfer maximum power?
a. 15 ohms
, b. 20 ohms
c. 10 ohms
d. 5 ohms - ✔✔a. 15 ohms
✔✔Maximum power transfer occurs when the load impedance is equal to the source
impedance - True or False? - ✔✔True
✔✔What will happen to the current through a resistor if the resistor value decreases?
a. current increases
b. current remains unchanged
c. current decreases
d. current and the voltage across the resistor increases - ✔✔c. current decreases
✔✔Which type of circuit has the same voltage drop across each component?
a. parallel
b. series-parallel
c. series
d. combination - ✔✔a. parallel
✔✔Total power in a series circuit is determined by the:
a. source voltage times the current
b. total voltage applied to the circuit
c. current flowing through the switch
d. average wattage rating of each resistor - ✔✔a. source voltage times the current
✔✔Which is the equivalent to 100 microamps?
a. .1 milliamps
b. 1 milliamps
c. 10 milliamps
d. 10 nanoamps - ✔✔a. .1 milliamps
✔✔A resistor _______.
a. stores an electric charge
b. is measured in coulombs
c. in a circuit causes a voltage drop from one end of the resistor to the other end
d. is dependent on lines of force - ✔✔c. in a circuit causes a voltage drop from one end
of the resistor to the other end
✔✔1 kΩ is the same as __________.
ANSWERS GRADED A+
✔✔When working at heights above 6 feet, a ______ is required by OSHA rules. -
✔✔Full body harness attached to a lanyard which prevents more than a 6' drop
✔✔Residual voltage is associated with _______.
a. Northern Lights
b. Corona arcing from electrical generators
c. charge retained by inductors
d. charge retained by capacitors - ✔✔d. charge retained by capacitors
✔✔The atomic number of an element is the same as the element's atomic weight - True
or False? - ✔✔False
✔✔An increase in voltage with resistance held constant causes current to _________.
a. decrease
b. increase twice the value of voltage
c. increase
d. none of the above - ✔✔c. increase
✔✔The ampere expresses ________.
a. volts/sec increase
b. a unit of charge movement per second past a given point
c. coulombs/charge
d. an increase in resistance - ✔✔b. a unit of charge movement per second past a given
point
✔✔The total resistance of a parallel circuit containing equal branch resistances is found
by the following:
a. by adding all of the branch resistance values
b. by taking the product of all the branch resistance values
c. by dividing the resistance value of a branch by the number of branches
d. the value cannot be found - ✔✔c. by dividing the resistance value of a branch by the
number of branches
✔✔A 12 VDC power supply has a 15 ohm internal resistance. What load resistance can
be connected to transfer maximum power?
a. 15 ohms
, b. 20 ohms
c. 10 ohms
d. 5 ohms - ✔✔a. 15 ohms
✔✔Maximum power transfer occurs when the load impedance is equal to the source
impedance - True or False? - ✔✔True
✔✔What will happen to the current through a resistor if the resistor value decreases?
a. current increases
b. current remains unchanged
c. current decreases
d. current and the voltage across the resistor increases - ✔✔c. current decreases
✔✔Which type of circuit has the same voltage drop across each component?
a. parallel
b. series-parallel
c. series
d. combination - ✔✔a. parallel
✔✔Total power in a series circuit is determined by the:
a. source voltage times the current
b. total voltage applied to the circuit
c. current flowing through the switch
d. average wattage rating of each resistor - ✔✔a. source voltage times the current
✔✔Which is the equivalent to 100 microamps?
a. .1 milliamps
b. 1 milliamps
c. 10 milliamps
d. 10 nanoamps - ✔✔a. .1 milliamps
✔✔A resistor _______.
a. stores an electric charge
b. is measured in coulombs
c. in a circuit causes a voltage drop from one end of the resistor to the other end
d. is dependent on lines of force - ✔✔c. in a circuit causes a voltage drop from one end
of the resistor to the other end
✔✔1 kΩ is the same as __________.
