ETA Game Cert Flashcards
What device is an AC semiconductor switching device?
Triac
When using a digital voltmeter, which polarity is the read lead?
Positive
Identify the movement of electrons in terms of force
Voltage
What device channels money to the hopper or drop?
Coin Guide
Which device is used to increase, decrease and isolate AC voltage?
Transformer
What minimum voltage is needed to make a (SCR)silicon semiconductor conduct electricity?
0.7 VDC
What type of memory chip holds game configuration data?
EPROM, PROM, ROM
What is the section between the bill validator head and the cassette?
Transport
Which electronic device is used in a filter?
Capacitor
Identify the movement of electrons in terms of volume
Current
Coins that are accepted by the coin comparator come out
Bottom Right
Identify the unit of measure for Voltage
Volts
What type of transformer has a primary of 110V AC coming in and 50V AC coming out of secondary?
Step Down
What type of circuit allows current to flow through multiple pathways?
Parallel Circuit
What is a coil of wire with a fixed iron core called?
Relay
Electrons have what type of electrical charge
Negative
When using a schematic to analyze a circuit, what do 2 lines crossing at right angles with a dot in the middle illustrate?
The wires cross and electrically touch
When using an Ohmmeter, a technician should always ensure the equipment being tested is
Off
Which one of the following would be changed in a coin comparator to convert it from a nickel to a quarter?
Coin
If the total current in a circuit is 2 Amps and the total resistance is 200 Ohms, what is the total voltage?
400 Volts
What is the tolerance of a resistor that has no 4th band?
20%
If a resistor has the color bands red, blue, black, gold. What is the value?
26 Ohms +/- 5%
A resistor with 5 bands violet, yellow, red, red, and brown. Has a value of what?
74.2k Ohms +/- 1%
What is the most common type of resistor?
Carbon
What device is an electrical one-way valve?
Diod
What does a coin comparator use to determine the validity of a coin?
Eddy Currents
What device has terminals called anode, cathode, and gate?
SCR - Selective Catalytic Reduction
When viewing a schematic with a diode symbol, a technician must be aware that ____ flow ____ the arrow
Electrons ………. With
An LED is a ____ junction device that when ____ biased emits visible light.
PN ………. Forward
A Zener diode
Regulates voltage
A TRIAC is a ____ terminal device that is similar to a ____.
Three ………. SCR
What is the predominant input signal for an AND gate?
Low
What are the 2 value ratings found on an electrolytic capacitor?
Voltage and MicroFarads
What device is used to change AC to DC in a power supply?
Rectifier
Which of the following is a DC semiconductor switching device
Transistor
What type of transistor is used for high current devices and has a built-in protective diode?
None of the above
Which component has a main terminal 1, main terminal 2, and a gate?
Triac
The cassette head in the bill validator head checks for what in a bill?
Metal
Which device is used to compare 2 voltage signals?
Op Amp
When using a multi-meter, what should the meter be set to when checking a transistor?
Diode
An R/C time constant is made up of what 2 components?
Resistor and Capacitor
A schematic showing a bipolar transistor symbol with the arrow pointing toward the base, is constructed with which 3 substrates?
PNP
What device, if you apply a plus voltage to it to turn on, will stay on when you remove the voltage?
SCR (0.7 VDC)
When a bill validator decides that a bill is acceptable, it sends a signal to the slot machine or vending machine. It stacks the bill only when…
the machine sends the signal back to the validator saying it is ok.
What voltage range represents a high signal in digital logic circuits?
0 VDC to 5 VDC
What is a resistor called, that is not in series and has a positive voltage supplied to it, which in turn supplies a small positive voltage to a distinct part of the circuit?
Pull up resistor
What is the name of the device that conducts when the circuit gets to 0.7 V
Diac
What device is an electrical latch?
R/S Flip Flop
Which device contains an LED and a Triac?
Optically Isolated Triac Driver
Which device contains a drain, source, and gate?
FET
what is an adjustable resistor called?
Potentiometer
The printer in a slot machine uses _____ to produce print on the paper.
Heat (Thermal printer)
What is the term used for the amount of electrical flow?
Current
What device is used to restrict the amount of flow of electricity?
Resistor
Which device stores small amounts of electrical charge?
Capacitor
What is the +5 VDC hook up on a 74 series IC chip?
Pin 14
What device is made up of 4 diodes
Full-wave rectifier
what device is used in a clock circuit to synchronize the clock signal?
Crystal
What are the 2 types of electrolytic capacitors?
Axial lead & Radial lead
Name the 2 terminals of the transistor that act as a single-pole switch.
Emitter & Collector
What is the name of a transistor that turns on with light?
Optic Sensor
What is the name of the device which has an LED and a transistor that turns on with light, built into an IC chip?
Opto-coupler
What component do we put across a solenoid, to protect a transistor or Triac from being damaged from the coils magnetic field collapsing?
Diode
If 15 VDC is the source of the circuit and the total resistance is 3 ohms, what is the current value of the circuit?
5 Amps
What type of memory chip is volatile?
RAM (Random Access Memory)
Where is money held when a bill gets to its final destination?
Dropbox
What is the decimal equivalent for binary 11111
31
What is the decimal equivalent for the hex number 123
291
What is the name of the standard code that uses binary numbers, letters, symbols, and instructions?
ASCII
How many times can a PROM chip be programmed?
Once
What terminal is used to clear all functions on the MPU?
Reset
What lines are used to identify memory locations?
Address Lines
When working with an electronics board and semiconductor devices, what safety device should be utilized when handling CMOS components?
Wrist Strap
What kind of interference may occur if an RJ45 cable is run over a fluorescent light fixture?
Electromagnetic Interference
When it comes to electrical fires, what should be used to put out a fire?
Class C Fire Extinguisher