27 3-71. The MOSFET is normally constructed so that it operates in either the depletion mode or the enhancement mode. The depletion mode MOSFET (a) uses what type of bias and (b) has what type of doped channel to cause a depletion of current carriers in the channel? 1. (a) Reverse (b) lightly 2. (a) Forward (b) lightly 3. (a) Reverse (b) heavily 4. (a) Forward (b) heavily 3-72. The enhancement mode MOSFET (a) uses what type of bias and (b) has what type of doped channel to enhance the current carriers in the channel? 1. (a) Reverse (b) lightly 2. (a) Forward (b) lightly 3. (a) Reverse (b) heavily 4. (a) Forward (b) heavily Figure 3H.A MOSFET schematic symbol. IN ANSWERING QUESTION 3-73, REFER TO FIGURE 3-H. 3-73. Which MOSFET element is identified by the arrow in the schematic symbol shown in figure 3-H? 1. Substrate 2. Source 3. Drain 4. Gate 3-74. What type metal is used in the construction of a MOSFET? 1. Oxide 2. Copper 3. Silver 4. Aluminum 3-75. What is the purpose of the shorting spring in a MOSFET? 1. To shunt the substrate to either the source or gate during operation 2. To protect the device from static electricity during replacement 3. To shunt the gates of a dual-gate MOSFET to make it operate like a single-gate MOSFET 4. To change the gain characteristics of the MOSFET
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
