Title: PE EXAM1 MC
Course: 15/SP Power Electronics Theory (ELTR-2560-31) > Section: Assignments

Q: Silicon is a more common semiconductor than germanium because silicon is _________.
- a better conductor
- lower barrier voltage
- heat tolerant
- a better resistor
A: heat tolerant

Q: The process of adding  impurities to pure silicon to create P and N material is called ______.
- doping
- loading
- PN modification
- NP modification
A: doping

Q: Semiconducting material with extra electrons is ____ material, while that with extra holes is ____ material.
- N, H
- P, H
- N, P
- pure, modified
A: N, P

Q: The semiconductor device rating “PIV” stands for
- Passed Instantaneous Voltage
- Peak Instantaneous Voltage
- Primary Integrated Voltage
- Peak Inverse Voltage
A: Peak Inverse Voltage

Q: ________is a type of grease that is used when installing a semiconductor to a heat sink.
- thermal compound
- heat sink glue
- sink caulk
- semi-compound
A: thermal compound

Q: A device that is used to keep electronics cool, which is using a white grease is a ________.
- thermal barrier
- thermal sink
- heat absorber
- heat sink
A: heat sink

Q: An oscilloscope is a ______ meter.
- amp
- ohm
- volt
- frequency
A: volt

Q: An oscilloscope waveform extends 2.5 divisions vertically and the scope is set for 1v/div.  A 10:1 attenuating probe is used.  What is the peak to peak voltage of the waveform?
- .25
- 2.5
- 25
- 250
A: 25

Q: One cycle of an oscilloscope waveform extends 4 divisions horizontally and the scope is set for 1ms/div.  A 10:1 attenuating probe is used.  What is the frequency (in HZ) of the waveform?
- 2500
- 2.5
- 25
- 250
A: 250

Q: The small clip on the side of an Oscilloscope probe is electrically connected to:___________
- ground
- the scope’s case
- neutral
- All of these
A: All of these

Q: The AC mode on an oscilloscope ________.
- amplifies AC
- cleans up AC
- adds DC
- blocks DC
A: blocks DC

Q: Solder that is used to join copper pipes has an acid core which will _____ electronic connections. Use solder that has a rosin core for soldering electronics.
- over heat
- reduce the conductivity
- corrode
- limit voltage
A: corrode

Q: <i>Solder braid</i> is used to ______ solder after the solder is heated by the soldering iron.
- evenout
- remove
- thicken
- layer
A: remove

Q: Melting a small amount of solder on the tip of the iron is called <i>____</i>and it will help the heat flow from the iron's tip to the joint.
- iron coating
- iron prep
- tinning
- priming
A: tinning

Q: When soldering, heat the_______ , <i>not</i> the _______.
- connection,  solder
- solder,  connection
- component, connection
- solder, component
A: connection,  solder

Q: Rectifier diodes can be considered electrical __________.
- check valves
- gate valves
- pressure regulators
- pressure reducers
A: check valves

Q: Vr, PRV or PIV ratings all indicate the voltage a diode can ____ before it conducts in the ____direction.
- drop, forward
- block, forward
- drop, reverse
- block, reverse
A: block, reverse

Q: The cathode of an LED is identified by ....
- a shorter lead than the anode
- a tab on the case
- a flat side of the case
- all (or any) of these
A: all (or any) of these

Q: Diodes that are normally used as voltage regulators, operating in reverse bias are called _______ diodes.
- rectifier
- zener
- signal
- bias
A: zener

Q: When building a DC rectifier filter capacitors are installed in ________ with the load, while inductors are installed in ________ with the load.
- series, series
- parallel, series
- parallel, parallel
- series, parallel
A: parallel, series

Q: In electronics the acronym IC stands for ______ .
- Instantaneous Current
- Integration Current
- Integrated Circuit
- Inverted Circuit
A: Integrated Circuit

Q: In electronics the acronym DIP stands for ______ .
- Dual Inline Package
- Derivative Integration Port
- Diac Integrated Package
- Derivative Integration Package
A: Dual Inline Package