Related Clues:

• Battery components
• They may be final or physical
• Some 47-Down
• Battery makeup
• Tries out
• They'll question you
• Checkups
• Some tough exams
• Ph.D. hurdle
• Rigorous exams
• Midterms, e.g.
• Verbal exams
• Hurdle for a graduate degree, maybe
• Doctoral exams
• See 28 Across