8th Technology Second Term Exam

A student programs the motors to move the car in forward direction, nevertheless, motor A is moved backwards. Select the option or options that can solve the problem

• To switch the connection of OUT1 and OUT2 (motor driver)

• To change the programming

• Replace the motor

• replace the motor driver

A student try to upload a code connecting the Arduino which has the circuitry connections shown in the image. Finally the process

• shows the message: "uploading done"

• shows an error, because the pins 0 and 1 are connected

• shows a syntax error, because of problems in logic

• shows the message: "compiling done"

The function of the battery shown in the image is to supply voltage to 

• the Arduino, the computer does not provide it with enough voltage of current 

• the motors, the Arduino cannot provide the enough energy to them

• the Arduino and Motor driver, the computer does not provide it with enough voltage and current

• the Arduino, Motor driver and Bluetooth module, the computer does not provide them with enough voltage and current

A student wants to sent data between Arduino and Bluetooth module using the circuit shown in the image, nevertheless, the process does not work even when the programming is correct. The reason is that

• the Bluetooth module is not connected to power supply

• Rxd and Txd are connected to Rx and Tx, respectively.

• Rxd and Txd are connected to Tx and Rx, respectively

• Vcc and GND are connected to - and + , respectively

The function of the switch shown in the image is to control the switching-on of the 

• Motor and Arduino

• Motor- driver and Motors

• Arduino and Bluetooth

• complete circuit

A student wants to solder the cables to the switch. Although the soldering iron works properly, the solder does not stick. Select an option that could explain the cause of this problem.

Situation 1: The flux was not applied to the switch connector and wires.
Situation 2: The tip of the soldering iron is very dirty.

• Both situations apply.

• No situation applies

• Situation 1 applies

• Situation 2 does not apply.