Electronic Principles Questions

• Which one of the following statements is true for current flowing in a series circuit?
• Waveforms are graphs that show:
• The knee voltage of a diode is approximately equal to the
• In a pure inductor:
• In an intrinsic semiconductor, the number of free electrons
• Which one of the following statements is true for the currents in a parallel RC circuit?
• When the graph of current versus voltage is a straight line, the device is referred to as
• How many types of flow are there in a semiconductor?
• Which one of the following is a direct statement of Ohm's law?
• The number of free electrons and holes in intrinsic semiconductor increases when the temperature
• A flashlight battery has internal resistance of 1W. For what values of load resistance does the flashlight battery appear stiff?
• Which one of the following kinds of materials has the lowest permeability?
• A certain electromagnet has 1000 turns of wire. How much current must flow through the coil in order to generate an mmf of 100 ampere-turns?
• The rms value of a sine waveform is:
• A transistor has a current gain of 125 and a base current of 30 µA. What is the collector current?
• A zener regulator has an input voltage from 15 to 20 V and a load current from 5 to 20 mA. If the zener voltage is 6.8 V, what value should the series resistor have?
• How much current flows through a 0.02-H choke that is operating from a 12-V ac, 100-Hz source?
• Which one of the following phrases best describes residual magnetism?
• What form of energy is used to maintain an imbalance of charges between the terminals of a battery?
• A farad is defined as the amount of capacitance necessary for: