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A+ Sample Questions » A+ Core Hardware questions

# A+ Core Hardware practice questions

1. If the voltage on pin 1 of the power supply is not in the range of ______ volts, the PC will not boot.
1. 10 - 20
2. 1 - 5
3. 50 - 110
4. 15 - 25
5. 2.5 - 5

2. The output voltages of a PC power supply are in the form of _____ current.
1. AC
2. DC
3. amperage
4. resistive
5. trickle

3. The output voltages from a PC power supply are:
1. +20, +110, -20, -110
2. +5, +12, -5, -12
3. +110, -110, +25, -25
4. +10, -10, +20, -20
5. +110, -15, +25, -5

4. A spike is a sharp and sudden rise in voltage It's duration is usually measured in:
1. nanoseconds
2. milliseconds
3. seconds
4. minutes
5. picto seconds

5. A brownout is defined as:
1. a slightly elevated voltage lasting from seconds to minutes or more
2. a slightly decreased voltage lasting from seconds to minutes or more
3. complete power out lasting a few minutes
4. alternating power out, power on lasting a few minutes
5. has nothing to do with electricity

6. Resistance is measured in units of:
1. ohms
3. helids
4. amperes
5. volts

7. Current is measured in units of:
1. volts
2. amps
3. ohms
5. diodes

8. Capacitance is measured in units of:
1. volts
2. amps
4. neutrinos
5. anti-neutrinos

9. Voltage is measured:
1. in parallel
2. in series
3. after breaking the circuit
4. after checking resistance
5. after checking current

10. Resistance is measured:
1. in parallel
2. in series
3. after breaking the circuit
4. after checking voltage
5. after checking current

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