WorksheetsElectrical Diagrams Quiz
Total questions: 15
Worksheet time: 15mins
What is the purpose of grounding systems in the diagrams?
To increase voltage
To provide safety
To reduce cost
To change color
What is the purpose of the DC disconnect in the stand-alone setup?
To connect the inverter
To disconnect the battery
To control the charge
To disconnect the PV
What is the configuration of a parallel connection in a PV system?
Positive to negative
Positive to positive and negative to negative
Negative to positive
Positive to ground
What is the term used to describe the ability of a conductor to carry current?
Conductivity
Resistance
Ampacity
Voltage
What advice is given about learning 3-phase power?
It is easy to learn
It takes a lifetime to learn
It is not important
It can be learned in a day
What is one third of a percent represented as?
0.1%/°C
0.2%/°C
0.33%/°C
0.5%/°C
What is the voltage of the module at -5°C in the practice problem?
30V
35V
40V
45V
What is the standard test condition (STC) temperature that must be memorized?
20°C
25°C
30°C
35°C
What should be done if the calculated step seems way off?
Ignore it
Use common sense to check and repeat the step
Continue without changes
Ask someone else to do it
What does common sense indicate if it gets colder than 25°C?
Voltage decreases
Voltage remains the same
Voltage increases
Voltage fluctuates
Under what condition is it possible to use more modules in series?
Without supervision
With engineering supervision
With no calculations
With basic calculations
What factor can raise the solar cell temperature, allowing more modules in series?
Wind speed
Solar irradiance
Rainfall
Humidity
What factors influence ampacity?
What is the function of a DC to DC inverter?
The Low design temperature is -2 C and the VOC temperature correction factor for your PV is - 0.33%/C. the characteristics of your module is ISC 8A, VOC 38V, and VMP 30V. How many modules can be put in series for an inverter that cannot go over 600V?
