Provide an example of a regular verb that ends with a voiced consonant sound, and explain how its -ed ending is pronounced in the past tense.

The verb 'rob' ends with the voiced /b/ sound. Therefore, the -ed ending in 'robbed' is pronounced as a /d/ sound.

Provide an example of a regular verb that ends with an unvoiced consonant sound, and explain how its -ed ending is pronounced in the past tense.

The verb 'mop' ends with the unvoiced /p/ sound. Therefore, the -ed ending in 'mopped' is pronounced as a /t/ sound.

I can correctly pronounce the -ed endings of regular verbs in American English.

1
When a regular verb ends in an unvoiced consonant sound, the -ed ending is pronounced as a T sound, such as in the word 'packed'.
2
If the final sound of a regular verb is voiced, a vowel, or a diphthong, the -ed ending is pronounced as a D sound, as in the word 'saved'.
3
When a regular verb ends in a T or D sound, the -ed ending is pronounced with the 'ih' vowel (as in 'sit') and a D sound, like in the word 'landed'.