The phrase "a competent example" is correct and usable in written English.
You can use it when referring to an example that demonstrates skill or proficiency in a particular area.
Example: "The report provided a competent example of how to effectively manage a team during a crisis."
Alternatives: "a suitable example" or "an effective example."
It was both a send-up of the genre and a competent example of its classic tropes, which was only possible thanks to Reynolds being simultaneously a traditionally handsome movie star and a gifted comic actor.
Allmusic reviewer William Ruhlmann stated the album is "a competent example of its genre" awarding the album three and a half stars.
William Ruhlmann of Allmusic awarded the album three and a half stars out of five, commenting; "Their album is a competent example of its genre, in which Tribbett and Maxwell combine to create crushing riffs over the pummeling rhythm section of Paul, while Gray howls typically enraged, expletive-littered lyrics to songs".
For a competent review of these examples and more see Huelga and Plenio (2013).
Imagine, for example, having a competent reader standing over your shoulder, ready to help with pronunciation.
Further, the performed activities in this study can be regarded as an example of what constitutes the development of a competent and skilled worker.
The principle of autonomy, for example, might conflict with the principle of beneficence in cases where a competent adult patient refuses to accept life-saving treatment.
For example, Carv would not have been nearly so compelling if he had been introduced as a competent, well intentioned police officer in series one; instead we witness his journey from hothead to the mature role model of series four and five.
For example, host cells persistently infected with defective HIV virions can become highly pathogenic upon coinfection with a competent virus (Iwabu et al. 2006).
I was a competent seminarian.
