Final answer:
The detonator should be securely taped perpendicular to the detonating cord for efficient transfer of the shock wave in explosives engineering.
Step-by-step explanation:
The question regarding how the detonator should be oriented when taped to detonating cord falls under the category of engineering with a specific focus on explosives engineering, which is generally a college-level subject due to the complexity and safety concerns involved. In professional practice, the detonator, also known as a blasting cap or initiator, should be securely attached to the detonating cord to ensure an efficient transfer of the shock wave to initiate the explosive chain reaction. The exact orientation required may differ based on the type of detonator and detonating cord, but generally, the detonator's open end (the part where initiation occurs) is taped perpendicular to the detonating cord to ensure good contact and efficient transmission of the explosive wave. It is critical that anyone handling explosives is trained and certified, as improper handling can lead to serious injury or death.