(D)

B-005-011-005 The strength of the magnetic field around a conductor in air is:

A inversely proportional to the diameter of the conductor

B directly proportional to the diameter of the conductor

C inversely proportional to the voltage on the conductor

D directly proportional to the current in the conductor

B-005-011-006 Maximum induced voltage in a coil occurs when:

A the magnetic field around the coil is not changing

B current is going through its greatest rate of change

C the current through the coil is of a DC nature

D current is going through its least rate of change

B-005-011-007 The voltage induced in a conductor moving in a magnetic field is at a maximum when the movement is:

A made in a clockwise direction

B perpendicular to the lines of force

C made in a counter clockwise direction

D parallel to the lines of force

B-005-011-009 A force of repulsion exists between two _________ magnetic poles.

A like

B unlike

C positive

D negative

B-005-011-010 A permanent magnet would most likely be made from:

A brass

B steel

C copper

D aluminum

(C)

B-005-009-001 If two equal-value inductors are connected in series, what is their total inductance?

A The same as the value of either inductor

B The value of one inductor times the value of the other

C Twice the value of one inductor

D Half the value of one inductor

B-005-009-002 If two equal-value inductors are connected in parallel, what is their total inductance?

A Half the value of one inductor

B Twice the value of one inductor

C The same as the value of either inductor

D The value of one inductor times the value of the other

B-005-009-003 If two equal-value capacitors are connected in series, what is their total capacitance?

A The value of one capacitor times the value of the other

B Half the value of either capacitor

C Twice the value of one capacitor

D The same as the value of either capacitor

B-005-009-004 If two equal-value capacitors are connected in parallel, what is their total capacitance?

A Half the value of one capacitor

B Twice the value of one capacitor

C The same as the value of either capacitor

D The value of one capacitor times the value of the other

B-005-009-005 What determines the inductance of a coil?

A The coil diameter, the number of turns of wire used to wind the coil and the type of metal used for the wire

B The core material, the coil diameter, the length of the coil and whether the coil is mounted horizontally or vertically

C The core material, the coil diameter, the length of the coil and the number of turns of wire used to wind the coil

D The core material, the number of turns used to wind the coil and the frequency of the current through the coil

B-005-009-006 What determines the capacitance of a capacitor?

A The material between the plates, the surface area of the plates, the number of plates and the spacing between the plates

B The material between the plates, the number of plates and the size of the wires connected to the plates

C The number of plates, the spacing between the plates and whether the dielectric material is N type or P type

D The material between the plates, the area of one plate, the number of plates and the material used for the protective coating

B-005-009-007 If two equal-value capacitors are connected in parallel, what is their capacitance?

A Half the value of either capacitor

B Twice the value of either capacitor

C The same value of either capacitor

D The value of one capacitor times the value of the other

B-005-009-008 To replace a faulty 10 millihenry choke, you could use two:

A 5 millihenry chokes in parallel

B 5 millihenry chokes in series

C 20 millihenry chokes in series

D 30 millihenry chokes in parallel

B-005-009-009 Three 15 microfarad capacitors are wired in series. The total capacitance of this arrangement is:

A 12 microfarads

B 18 microfarads

C 5 microfarads

D 45 microfarads

B-005-009-010 Which series combinations of capacitors would best replace a faulty 10 microfarad capacitor?

A Two 10 microfarad capacitors

B Twenty 2 microfarad capacitors

C Ten 2 microfarad capacitors

D Two 20 microfarad capacitors

B-005-009-011 The total capacitance of two or more capacitors in series is:

A found by adding each of the capacitors together

B always greater than the largest capacitor

C always less than the smallest capacitor

D found by adding each of the capacitors together and dividing by the total number of capacitors

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January 17, 2018