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Questions and Answers

Unless otherwise specified, any value given for current or voltage in an AC circuit assumed to be

  • maximum value
  • effective value (correct)
  • instantaneous value
  • value

A circuit has an applied voltage of 24 volts and a load consisting of a 10-ohm resistor in series with a 30 ohm resistor. what is the voltage drop across the 10-ohm resistor

  • 6 volts (correct)
  • 8 volts
  • 24 volts
  • 12 volts

which is correct in reference to electrical resistance

  • An electrical device that has a high resistance will use more power than one with a low resistance
  • Two electrical device will have the same combines resistance if they are connected in series as they will have if they are connected in parallels
  • If one of three bulbs in a parallels lighting circuit is removed, the total resistance of the circuit will become greater (correct)

The potential difference between two points in an electrical circuit is measured in

<p>volts (A)</p> Signup and view all the answers

Forward biasing of a solid state device will cause the device to

<p>Conduct (A)</p> Signup and view all the answers

Which statement is correct when made in reference to a parallels circuit

<p>The total current is equal to the sum of the current through the individual branches of the circuit (B)</p> Signup and view all the answers

Which of these will cause the resistance of a conductor to decrease

<p>Decrease the length or increase the cross-sectional area (C)</p> Signup and view all the answers

What is an advantage of a rotating field alternator versus a DC generator

<p>The alternator stator armature can provide higher voltage than that of a generator (B)</p> Signup and view all the answers

In a P-N-P transistor application, the solid state device is turned on when

<p>Base is negative with respect to the emitter (C)</p> Signup and view all the answers

How much does a 30-volt,1/2 horsepower motor that is 85%, efficient draw from the bus

<p>14.6 amperes (B)</p> Signup and view all the answers

which term mean 0.001 ampere

<p>milliampere (C)</p> Signup and view all the answers

In an AC circuit, the effective voltage is

<p>less than the maximum instantaneous voltage (B)</p> Signup and view all the answers

Increasing applied frequency will increase ...... and present more opposition to current in the circuit

<p>Inductive reactance (A)</p> Signup and view all the answers

In three-unit regulator, the... relay prevent damage to the generator due to extreme loads in the circuit

<p>Current limiter (B)</p> Signup and view all the answers

The electrolyte level of a nickel-cadmium battery is highest when the battery is

<p>In a fully charged condition (B)</p> Signup and view all the answers

What electrical component builds voltage to 99% of the applied value in five time constants

<p>Capacitors (B)</p> Signup and view all the answers

If the constant speed drive spins faster, the...outputs a higher current to the solenoid valve, reducing pressure to the hydraulic pump, slowing the drive

<p>tachometer generator (A)</p> Signup and view all the answers

The thermocouple uses which source of electrical energy

<p>temperature (C)</p> Signup and view all the answers

What would you install in a circuit that has numerous items operating at different potentials, but powered from one source

<p>Voltage divider (C)</p> Signup and view all the answers

When handling a line replaceable unit containing sensitive electronics, what should you not do

<p>Wear consumer synthetic clothing (A)</p> Signup and view all the answers

What is the function of a band-pass filter

<p>Only frequencies between two cutoffs is passed (B)</p> Signup and view all the answers

What device is used to limit mechanical travel by interrupting an electrical circuit

<p>Microswitch (B)</p> Signup and view all the answers

What electrical component maintains a holding circuit after the energizing power is removed

<p>Latching relay (A)</p> Signup and view all the answers

How do engineers compensate for high ambient temperature in electrical power distribution system installations

<p>Derating circuit breakers (B)</p> Signup and view all the answers

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