اختبار مراجعة مادة التكييف والتبريد

The correct answer is "خطأ" which means "False" in English. The statement suggests that the water cooler is electrified due to a leakage in the refrigerant gas. However, this is incorrect as the water cooler can get electrified due to faulty wiring, grounding issues, or a short circuit. The presence of a refrigerant gas leak does not directly cause the water cooler to become electrified.

The correct answer is "صح" because R134a is indeed a type of refrigerant commonly used in water coolers.

The correct answer is "التحكم بدرجة حرارة الماء". The thermostat in cooling systems is responsible for regulating the temperature of the water. It senses the temperature of the water and adjusts the flow of coolant or refrigerant accordingly to maintain the desired temperature. This helps to prevent overheating or overcooling of the system and ensures efficient operation.

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The statement "The choice of the suitable water cooler depends on the shape of the cooler" is incorrect. The choice of a suitable water cooler depends on various factors such as cooling capacity, energy efficiency, size, features, and customer requirements. The shape of the cooler is not the sole determining factor in choosing a suitable water cooler.

The given correct answer states that the electrothermal cooling system is used in small water coolers. This means that the cooling system in these small water coolers operates using electricity and heat transfer to cool the water. This type of cooling system is commonly used in small appliances where a compact and efficient cooling solution is required.

The correct answer is 7-13 C. This range represents the typical temperature of cold water from water coolers. Cold water is usually chilled to a temperature between 7 and 13 degrees Celsius, providing a refreshing and cool drink.

Checking the water level in the water bottle is not a possible cause for the water cooler not cooling. The other options listed are all possible causes that should be checked in order to troubleshoot the issue.

The correct answer is "ثيرموستات,لمبة اشارة,ريلاي" because these are all components commonly found in an electric circuit for a water cooler. A thermostat is used to regulate the temperature, a signal lamp indicates the status of the cooler, and a relay is used to control the flow of electricity to different parts of the circuit.

The correct answer is "النوع ذات خزان ماء" and "النوع ذات التبريد الفوري". This is because the given statement mentions two types of water coolers: one type that operates with water pressure and another type that has a water tank. Additionally, it mentions another type that cools remotely and a type that provides instant cooling.