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OEM2-EN-circuite elctronice(A)

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About this collection

The ANR bank contains many sets with original names and codes, including navigation, safety and equipment topics. Select a module by name or use question search.

“ANR — Electrotehnica-SEM_OEM2 — OEM2-EN-circuite elctronice(A)” contains 37 questions across 1 collection.

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Sample questions and answers

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In a DC series circuit, all the conductors have the same :

One correct answer

  • power expended in them
  • voltage drop across them
  • resistance to current flow
  • current passing through them✓ Correct answer
The basic control action of a magnetic amplifier depends upon :

One correct answer

  • variations in the load capacitance
  • changes in inductance✓ Correct answer
  • type of core material
  • construction of the core
A fuse that blows often should be replaced only with a fuse of :

One correct answer

  • the recommended current and voltage rating✓ Correct answer
  • higher current and voltage rating
  • higher current and lower voltage rating
  • lower current and higher voltage rating
Which of the following statements represents the important factor that must be considered when replacing a faulty diode in the exciter rectifier assembly?

One correct answer

  • Be certain that the replacement diode is the same polarity as the one removed.✓ Correct answer
  • Never alter the diode alignment to cause a change in the neutral plane.
  • Replacement of a diode also requires balancing of the rotor with a one-piece rotor lamination to be shrunk fit and keyed to the shaft.
  • The replacement diode must be dipped in varnish prior to installation to protect against humidity.
A temperature instrumentation system for an engine room console consists of a resistance temperature detector (RTD), a measuring bridge circuit, and a meter (or alarm circuit).Which of the following statements is true concerning the measuring bridge circuit :

One correct answer

  • The input voltage varies in a linear fashion with temperature.
  • The voltage across the center of the resistance bridge is always constant.
  • The resistance bridge is said to be balanced when its output voltage is zero.✓ Correct answer
  • The input voltage of the resistance bridge is the constant temperature signal.

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