This is a very good resource for OTR exam facts!  At http://www.examfacts.com they have an excellent study guide filled with basic exam facts for the OTR exam.  The book is also available at Amazon.com

Example Questions from the Exam OTR Book:

What does “maintenance” related to invention describe?

Interventions designed to support and preserve the individual's current functional level, no improvement is expected

What is included in the intervention plan?

Long term goals

Short term goals

Intervention methods

Durations/frequency/number and type of sessions planned

Recommended OT services

What are standard precautions?

Primary strategy for control of nosocomial infection and used in care of ALL persons

What are the primary areas of occupation?

ADLs

IADLs

Work

Education

Play/leisure

Social participation

What is an activity synthesis?

It is the process of designing activity for OT evaluation or Intervention