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To identify a complex circuit, look for ---------CORRECT ANSWER------------- ----two voltage sources or opposing currents Which statement is NOT true abut a loop? ---------CORRECT ANSWER----- ------------A Loop can be traced in only one direction The algebraic sum of the voltage sources and voltage drops in a loop equals ---------CORRECT ANSWER-----------------Zero Which of the following troubleshooting steps should be performed third? ---- -----CORRECT ANSWER-----------------Caluculate and measure values Which of the following troubleshooting steps should be performed first? ----- ----CORRECT ANSWER-----------------Analyze the circuit Which of the following troubleshooting steps should be performed second? ---------CORRECT ANSWER-----------------Check the setup When you check to see if the equipment is plugged in you are --------- CORRECT ANSWER-----------------Checking the Setup
The voltage dropped across a component that has changed ohmic value is ---------CORRECT ANSWER-----------------Increased or Decreased Current in a series circuit with shorted components is ---------CORRECT ANSWER-----------------Increased A component in a series circuit with a changed ohmic value provides --------
- CORRECT ANSWER-----------------An increase or decrease in circuit resistance Case To Case continuity of a good shielded cable measures --------- CORRECT ANSWER-----------------Short When using the 2 person method to troubleshoot a cable ---------CORRECT ANSWER-----------------One person uses a multimeter and the other person uses a jumper wire When wiggling power cords with the circuit power applied, you should ------- --CORRECT ANSWER-----------------Have a troubleshooting partner near the circuit breaker After correcting a problem you should ---------CORRECT ANSWER----------- ------Check the results
The TOTALIZE function of a frequency counter ---------CORRECT ANSWER-----------------Increments the display each time a pulse of cycle is received In the CHECK function, the frequency counter displays the --------- CORRECT ANSWER-----------------Internal oscillator frequency The period of 10hz signal is indicated on the display as ---------CORRECT ANSWER-----------------10000us The POWER switch on a frequency counter ---------CORRECT ANSWER--- --------------Applies power to the frequency counter What are the GATE TIME controls used for on a frequency counter --------- CORRECT ANSWER-----------------Select the time the display is updated The display of a frequency counter is used to indicate ---------CORRECT ANSWER-----------------Frequency, Period and the total number of Pulses The frequency switches of a frequency counter select ---------CORRECT ANSWER-----------------Check, Totalize, Period and Frequency Rages What is the L.F. control used for on a frequency counter? --------- CORRECT ANSWER-----------------Eliminates unwanted high frequencies
In the PERIOD function, the frequency counter displays the --------- CORRECT ANSWER-----------------Time for one complete cycle Which statement is NOT true about a loop? (Kirchhoffs Law) --------- CORRECT ANSWER-----------------A loop can be traced in only one direction Kirchhoff's Voltage Law States? ---------CORRECT ANSWER----------------- In a loop, the algebraic sum of the voltage drops and voltage sources equals zero Kirchhoffs Current Law States? ---------CORRECT ANSWER----------------- The sum of current into a point equals the sum of the currents out To indentify a complex circuit, look for a circuit where... ---------CORRECT ANSWER-----------------Charge tries to flow into two directions Substite I1 = I2+I3 into 3|1+2|2+4|4 = 0 ---------CORRECT ANSWER--------- --------5|2+7|3 = 0 The point where current leaves a component ---------CORRECT ANSWER-- ---------------Should be labeled positive
In RL series circuits, ER and EL_________ ---------CORRECT ANSWER---- -------------Are at the right angle In RL series circuits, R and XL________ ---------CORRECT ANSWER------- ----------Oppose current at right angle As XL increases, a circuit becomes more_____ ---------CORRECT ANSWER-----------------Inductive What is copper conductor and a PCB drill hole usually called? --------- CORRECT ANSWER-----------------A Pad Why would a turret terminal be used on a PCB? ---------CORRECT ANSWER-----------------As a wire connection point On what type of circuit board would you most likely find an unsupported hole? ---------CORRECT ANSWER-----------------A single-sided PCB What is the process of removing copper from a blank PCB called? --------- CORRECT ANSWER-----------------Etching Which of the following is a characteristic of a good solder connection? ------ ---CORRECT ANSWER-----------------Concave shape
What is the ideal protrusion distance above the pad? ---------CORRECT ANSWER-----------------The pad radius Which of the following mounting types is easiest to repair? --------- CORRECT ANSWER-----------------Straight-through mount What is the simplest method of open trace repair? ---------CORRECT ANSWER-----------------Surface wire jumper Why should care be taken when removing a component that is to be discarded? ---------CORRECT ANSWER-----------------So the circuit board is not damaged Why shoulda nicked wire trace be repaired? ---------CORRECT ANSWER--- --------------All Of The Above (It may be mechanically weak)(It has less current capacity than required)(Its bond to the board may be weak) What material is most commonly used to form the traces on PCB's? --------- CORRECT ANSWER-----------------Copper What id the copper conductor around a PCB drill hole usually called? --------
- CORRECT ANSWER-----------------A Pad On what type of circuit board would you most likely find an unsupported hole? ---------CORRECT ANSWER-----------------A Single-Sided PCB
What factor do you suppose the pattern or template for a PCB is NOT based upon? ---------CORRECT ANSWER-----------------Color of the component Which statement best describes a single-sided PCB? ---------CORRECT ANSWER-----------------Copper on one side What is a circuit board trace similar to in function? ---------CORRECT ANSWER-----------------A connection wire When should component leads be clipped to length? ---------CORRECT ANSWER-----------------Before being soldered What degree of bend do you typically put in a resistor's leads for mounting it to a PCB? ---------CORRECT ANSWER-----------------90 Degrees Which of the following tools should be used for bending component leads? ---------CORRECT ANSWER-----------------Rounded needle nose pliers What type of repair is an eyelet typically used for? ---------CORRECT ANSWER-----------------Missing pad repair What tool may be required to remove solder from plated-through hole? ----- ----CORRECT ANSWER-----------------Heat/Vacuum tool
What determines the method of component replacement on a printed circuit board? ---------CORRECT ANSWER-----------------The original installation method Which of the following materials would NOT be used as baseboard for a PCB? ---------CORRECT ANSWER-----------------Cardboard what is copper conductor around a PCB drill hole usually called? --------- CORRECT ANSWER-----------------A Pad Which of the following tools should be used to remove solder from a connection? ---------CORRECT ANSWER-----------------A solder vacuum Why should a component lead not be bent right at the lead/body junction? - --------CORRECT ANSWER-----------------This bend mechanically stresses the component What is the minimum distance a lead bend should be kept away from a component body? ---------CORRECT ANSWER-----------------1/8" What is the ideal maximum time to form a solder connection? --------- CORRECT ANSWER-----------------2 Seconds What is the preferred method of repairing a lifted trace? ---------CORRECT ANSWER-----------------Overbonding
CH A of the frequency counter ---------CORRECT ANSWER-----------------Is used to measure frequencies from 0.1 Hz to 100 Mhz What is the ATT control used for on a frequency counter ---------CORRECT ANSWER-----------------Reduces the input signal by a factor of 20 dB The display of a frequency counter is used to indicate ---------CORRECT ANSWER-----------------Frequency, period, and the total number of pulses What is the RESET control used for on a frequency counter --------- CORRECT ANSWER-----------------Clears the display of any previous data In the TOTALIZE function, the frequency counter displays the --------- CORRECT ANSWER-----------------Total Number of Cycles The period of a 10Hz signal is indicated on the display as --------- CORRECT ANSWER-----------------10000us Frequency counters measure a signal's ---------CORRECT ANSWER--------- --------Frequency The display of a frequency counter is used to indicate ---------CORRECT ANSWER-----------------Frequency, Period, and the total number of pulses
What is the ATT control used for on a frequency counter? --------- CORRECT ANSWER-----------------Reduces the input signal by a factor of 20 dB The Frequency switches of a frequency counter select ---------CORRECT ANSWER-----------------Check, Totalize, Period and Frequency Ranges CH C of the frequency counter is used ---------CORRECT ANSWER---------- -------To measure frequencies from 90 MHz t 2 GHz What is the RESET control used for on a frequency counter? --------- CORRECT ANSWER-----------------Clears the display of any previous data What is the LF control used for on a frequency control? ---------CORRECT ANSWER-----------------Eliminates unwanted high frequencies What are the GATE TIME controls used for on a frequency counter? --------- CORRECT ANSWER-----------------Select the time the display is updated Conventional wrap is not used for the military equipment because it --------- CORRECT ANSWER-----------------Does not prevent electrical shorts between adjacent pins A half wire wrap turn requires that the insulated wire ---------CORRECT ANSWER-----------------Make contact with three corners of the wrap post
A multimeter's internal resistance is in ---------CORRECT ANSWER----------- ------Series or parallel to the circuit under test When measuring voltage, the internal resistance of a multimeter is --------- CORRECT ANSWER-----------------In Parallel to the circuit The ohms per volt rating is ---------CORRECT ANSWER-----------------An indication of internal resistance in analog multimeter The loading effect of a multimeter when measuring current --------- CORRECT ANSWER-----------------Increase circuit resistance If the ohms per volt rating is 30,000 what is RM when using a 30V range? -- -------CORRECT ANSWER-----------------900 K Ohms When measuring voltage, the loading effect of a multimeter is reduced by adding ---------CORRECT ANSWER-----------------Large series resistance Measurement errors produced by the internal resistance of a multimeter ---- -----CORRECT ANSWER-----------------Should be considered when measuring circuit values
The loading effect of a multimeter when measuring voltage --------- CORRECT ANSWER-----------------Decrease voltage rading
