Module 5 Power Electronics
- In Figure 5-20, during the “Buck” mode the power flow occurs from Battery __ to Battery ____ and Battery ____
- A PWM signal consists of two main components that define its behavior: a duty cycle and a ____
- When a capacitator is connected in series between the source and the load it is called a ____ capacitator
- The circuit shown in Figure 5-17 has a 300 VDC input and a 0.6 duty cycle. Demine its output voltage
- Ideally, a forward-biased diode will have a voltage drop of ____ V if its made of silicon, and ____ V if made of germanium
- The peak rectified output voltage of a full-wave center tap rectifier is 170V. The supply frequency is 60 Hz. Calculate the output frequency
- One of the main advantages of FETs vs BJT is that FEBs are not subject to thermal ____ when the temperature of the device increases
- For the circuit shown Figure 5-10 calculate the average output voltage when a 100 filter capacitator is used
- For the circuit shown in Figure 5-22, which image shows the correct reading for a reverse-biased test of a properly functioning diode?
A
B
C
D
E
10.The process of superimposing a low-frequency signal on a high-frequency carrier signal is called a ____ signal
- When a capacitator is connected in parallel with the load it is called a ___ capacitator
- For the circuit shown in Figure 5-10 calculate the average output voltage when a 100 capacitator is used
13 An ideal MOSFET should have _____ resistance between the gate and any other thermal
- The ratio between the rms of the AC component and the average DC output voltage of a rectifier filer is known as the percent ____
15.The peak rectified output voltage of a full-wave center tap rectifier is 170V. The supply frequency is 60 Hz. Calculate the DC voltage
16.Which of the following semiconductors has the highest electron mobility?
GaN
SiC
MCM
Silicon
Germanium
- For the converter shown in Figure 5-18, calculate the percent duty cycle
- The main difference in design between isolated and non-isolated converters is that a non-isolated converter does not have a ____
- Figure 5-21 shows the waveforms for which type of PWM?
5PWM
MPWM
SINPWM
MSPWM
DPWM
- Determine the average output voltage for the circuit shown in Figure 5-7 include the voltage drop across the silicon diodes in the calculation
- IGBTs are available in sizes that can control currents up to
50A
100 A
500 A
2600 A
3600 A
22 Figure 5-13 shows the waveforms for which type of PWM?
5PWM
MPWM
SINPWM
MSPWM
DPWM
- The complexity and timing requirements of three -phase inverters require that they use a gate ___ to manage this process
- Determine the average output voltage of a three-phase full wave rectifier with a peak input voltage of 340V
25 Which of the following transistors are not voltage – controlled?
BJT
FET
MOSFET
IGBT
Power MOSFET
26.
Which of the following semiconductors has the highest thermal conductivity?
GaN
SiC
MCM
Silicon
Germanium
- When testing a MOSFET with an ohmmeter, the resistance of the channel between drain and source should be
2
20
200
2
20
28The junction between two power conversion stages where an energy storage element acts as a buffer for each is called a DC
- The transistor shown in Figure 5-2 is a
PNP BJT
N-channel FET
NPN BJT
P-channel FET
Power MOSFET
- Determine the required percent duty cycle to provide 600 VDC from a 100 VDC input.