You can down load EMSD web site now, sample question for MC & long question. you can try!
In the marker, not easy to find one book can support. I only suggest some book for your reference:
1. lightning BS6651
2. power system analysis (John J.Grainger William D. Setevenson,JR.)
3. Electrical Installation Calculation (B.D.Jenkins M. Coates)
4. 大陸書