126. What is the difference between a conductor and an insulator?
127. A circuit has two different voltage sources that are connected in a series-aiding form. If the sources are rated at 6 V and 9 V, what is the total source voltage?
128. At room temperature an intrinsic semiconductor has
129. If the base supply voltage increases, the Q point moves
130. Positive ions are atoms that have
131. Which one of the following is a statement of Kirchhoffs current law?
132. A zener diode has a voltage of 10 V and a current of 20 mA. What is the power dissipation?
133. Which one of the following phrasers best describes flux density?
134. Which is the most widely used semiconductor?
135. The transistor has a current gain of 175. If the base current is 0.1 mA, what is the collector current?
136. An intrinsic semiconductor has some holes in it at room temperature. What causes these holes?
137. An audio transformer has a turn ratio of 9, What is its impedance ratio?
138. How many protons does the nucleus of a silicon atom contain?
139. A circuit has two different voltage sources that are connected in a series-opposing form. If the sources are rated at 6 V and 9 V, what is the total source voltage?
140. The emitter diode is usually
141. 1 Microfarad is the same as:
142. Which one of the following statements is true for resistance in a parallel circuit?
143. The direction of conventional current flow is:
144. Doubling the operating frequency of a purely inductive circuit:
145. The secondary voltage for a certain power transformer is twice the voltage applied to the primary. The current flowing in the secondary winding will be:
146. What is a free electron?
147. To get the Norton current, you have to
148. The barrier potential accross each depletion layer is
149. Which one of the following properties of a magnetic circuit can be directly compared to voltage in an electrical circuit?
150. What kind of battery is most likely included in a cordless electric knife?