It's actually not typical for a dog to remain completely silent and still when arriving in a new home. This behavior often indicates they're feeling overwhelmed and unfamiliar with their surroundings. In such cases, it's beneficial for owners to provide the dog with some toys to help them get comfortable and explore their new space. If this quiet behavior persists, it's not necessarily a good thing. It could signify underlying stress or anxiety that needs to be addressed. 
There are several reasons why a dog might be quiet when settling into a new home: First, the dog might be so nervous or frightened that it's hesitant to make any noise. Offering items such as toys, chews, and treats can help them relax. Encourage them to explore at their own pace and give them gentle petting to reassure them. Once they feel more secure, their behavior will normalize. Second, if your dog remains quiet even after becoming comfortable, it’s worth checking to see if there might be a physical issue with their throat. It is important to consult a veterinarian to rule out any health concerns.
The sudden change of environment can cause dogs to feel very insecure. This can result in whimpering or even shaking. Don’t worry too much, owners can prepare a comfortable and soft bed for them before they arrive home, which can help them relax a bit. After a short period of calming interaction, the dog will gradually settle down. Of course, there are some unusual dogs that settle down and even sleep soundly on their first night. If this is the case, there is no need to be concerned.