Arduino Software Quiz! Trivia
(215).jpg "Arduino Software Quiz! Trivia - Quiz")
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- 1.
The following error shows while uploading to your arduino board, what is the most probable reason? avrdude: ser_open(): can't open device "\\.\COM#": The system cannot find the file specified. Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions. (HINT: this is a very common problem, NOTE: # is a reference to any number)
- A.
The port is not established properly (connnection between arduino and computer is faulty or non-existent)
- B.
The problem occurred while compiling the code
- C.
The error occurred as the file necessary for uploading was deleted by a virus
- D.
The avrdude is a bad dude who troubles your arduino
Correct Answer
A. The port is not established properly (connnection between arduino and computer is faulty or non-existent)Explanation
The most probable reason for the error message is that the port is not established properly, indicating a faulty or non-existent connection between the Arduino board and the computer. This can occur due to issues such as a loose or disconnected USB cable, incorrect port selection, or a malfunctioning USB port on the computer.Rate this question:
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- 2.
How do you know that your code is being uploaded without looking at the computer screen?
- A.
The LED at pin 13 starts blinking
- B.
Rx and Tx LEDs start blinking
- C.
A buzzing sound is heard from the arduino, as the code is uploaded into the microcontroller chip
- D.
Rx and Tx LEDs start glowing very brightly
Correct Answer
B. Rx and Tx LEDs start blinkingExplanation
When the Rx and Tx LEDs start blinking, it indicates that the code is being uploaded to the Arduino microcontroller chip. These LEDs are connected to the serial communication lines of the Arduino board. During the upload process, data is sent from the computer to the Arduino through these lines, causing the LEDs to blink. This serves as a visual indication that the code transfer is happening successfully, even without looking at the computer screen.Rate this question:
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- 3.
Which of the following is absent in an Arduino/Genuino Uno?
- A.
16MHz quartz crystal timer
- B.
ATmega 328P chip
- C.
ATmega 2560 chip
- D.
8-bit ADC
Correct Answer
C. ATmega 2560 chipExplanation
The Arduino/Genuino Uno does not have the ATmega 2560 chip. It is equipped with the ATmega 328P chip instead. The ATmega 2560 chip is typically found in the Arduino Mega board, which is a different model.Rate this question:
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- 4.
Suppose you supplied excess voltage(greater than 5V) to the Arduino, which of the following is most likely to happen:
- A.
The microcontroller chip blows
- B.
The board functions better than normal (at greater speeds and more efficiently)
- C.
The board functions normally
- D.
The board functions normally but the chip heats excessively
Correct Answer
C. The board functions normallyExplanation
If excess voltage (greater than 5V) is supplied to the Arduino, it is most likely that the board will function normally. This is because the Arduino has built-in voltage regulators that protect the microcontroller chip from receiving excessive voltage. These voltage regulators regulate the incoming voltage to a safe level for the chip to operate without getting damaged. Therefore, even if excess voltage is supplied, the board will still function normally without any damage to the microcontroller chip.Rate this question:
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- 5.
Which overflows before, millis() or micros()? Note: I)overflows in this context is analogous to the value reseting to zero II)millis returns milli seconds and micros returns microseconds since the program started running in the arduino
- A.
Millis()
- B.
Micros()
- C.
Both return time dependent variable so both overflow at the same time
- D.
Neither of them overflows at all
Correct Answer
B. Micros()Explanation
The correct answer is micros(). The micros() function returns the number of microseconds since the program started running on the Arduino. Since it measures time in smaller units (microseconds) compared to millis() (milliseconds), it will overflow or reset to zero before millis(). Therefore, micros() overflows before millis().Rate this question:
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- 6.
Which of the following pins cannot be used to achieve a fading effect in an LED using Arduino?
- A.
A0
- B.
11
- C.
6
- D.
2
Correct Answer
D. 2Explanation
Pin 2 cannot be used to achieve a fading effect in an LED using Arduino because it does not support Pulse Width Modulation (PWM) which is necessary for controlling the brightness of an LED. PWM allows the Arduino to rapidly switch the LED on and off at different duty cycles, creating the illusion of a fading effect. Therefore, pin 2 is not suitable for achieving this effect.Rate this question:
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- 7.
Which of the following is NOT a predeclared constants in Arduino?
- A.
true
- B.
HIGH
- C.
LED_BUITIN
- D.
Low
Correct Answer
D. LowExplanation
In Arduino, "low" is not a predeclared constant. "true", "HIGH", and "LED_BUILTIN" are all predeclared constants in Arduino. "low" is typically used as a value to represent a low logic level or a digital pin set to a low state, but it is not a predeclared constant.Rate this question:
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- 8.
The micros() function has resolution of 4 micro seconds, hence what would you predict the accurate range of the function delayMicroseconds()?
- A.
0 and above
- B.
1 and above
- C.
2 and above
- D.
3 and above
Correct Answer
D. 3 and aboveExplanation
The micros() function has a resolution of 4 microseconds, meaning it can measure time intervals in increments of 4 microseconds. The delayMicroseconds() function uses the micros() function internally to delay for a specified number of microseconds. Since the micros() function has a resolution of 4 microseconds, it is reasonable to predict that the accurate range of the delayMicroseconds() function would start from 3 microseconds and above.Rate this question:
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- 9.
Which of the following is not a version of the Arduino?
- A.
Tre
- B.
Galileo
- C.
Zero
- D.
Leonardio
Correct Answer
D. LeonardioExplanation
The Arduino Leonardio is not a version of the Arduino. The correct version is actually called Arduino Leonardo.Rate this question:
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- 10.
If Serial is begun with Serial.begin(9600); How much time will it take to send 2 ASCII characters?
- A.
1.667 millisecond
- B.
1.9220 millisecond
- C.
4.800 millisecond
- D.
1.9200 millisecond
Correct Answer
A. 1.667 millisecondExplanation
When Serial.begin(9600) is called, it sets the baud rate of the serial communication to 9600 bits per second. This means that it can transmit 9600 bits in one second. Since each ASCII character is 8 bits long, it will take 8/9600 seconds to transmit one character. Therefore, it will take 2*(8/9600) = 0.001667 seconds or 1.667 milliseconds to send 2 ASCII characters.Rate this question:
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Current Version
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Mar 22, 2023Quiz Edited by
ProProfs Editorial Team -
May 31, 2017Quiz Created by
Shreev
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