76. The time required for one weber of flux to cut a conductor and produce one volt is:
77. What is the maximum source current for a transformer rated at 10 kVA, 1000/500 60 Hz?
78. What is the total inductance assuming no mutual inductance?
79. A voltage is induced in a transformer secondary winding by the action of the:
80. What is electromagnetism?
81. Counter emf or induced voltage is:
82. What are the properties that determine the inductance of a coil?
83. An inductor is in series with a voltage source, an open switch, and a resistor. The instant the switch is closed, the inductor acts like
84. What is the phase angle between the source voltage and current, when a 100 mH inductor with a reactance of 6 k, and a 1 k resistor are in series with a source?
85. When a load is not connected to the secondary of a transformer:
86. The primary winding of a transformer is the side connected to the load.
87. An air-core inductor has a metal core.
88. The time constant of an inductive circuit is dependent on the circuit's resistance.
89. The amount of dc current that an inductor will allow to pass depends on the circuit's total resistance that is in series with it.
90. An inductor will boost current flow.
91. A step-up transformer will have a turns ratio greater than 1.
92. The secondary current in a transformer depends on the secondary voltage and load resistance values.
93. Kirchhoff's voltage law does not apply to series RL circuits.
94. Magnetic force is the force that produces a magnetic field.
95. A magnet consisting of a coil of wire wound around a soft iron or steel core is called an electromagnet.
96. An ideal inductor would not dissipate any energy.
97. Five time constants are required for current in an inductor to reach a maximum value.
98. The quality factor of an inductor is the ratio of inductive reactance to the winding resistance of the coil.
99. In a dc circuit, the only conversion of energy to heat is in the inductance of the coil itself.
100. Inductance is proportional to the cross-sectional area of a coil.