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c) large electric control devices;
d) large electric generators.

7. From the control gear, electricity goes to:
a) directly to the hole;
b) to the drill string;
c) to electric motors;
d) to small electric devices.

8. As the electric rig does not require a compound, crew members do not have to:
a) spend time reeling up the line on the drum;
b) spend time controlling the engine from the control gear;
c) use the large machinery;
d) spend time lining up and connecting the compound with the engines and
drawworks.

9. Where can the rig designer position the engine?
a) away from the rig floor;
b) near the drawworks;
c) away from the control gear;
d) near the crown block.

10. What are the main parts of typical hoisting system?
a) drawworks (or hoist), a mast or derrick, the cathead, the crown block, the
traveling block, the main brake;
b) drawworks (or hoist), a mast or derrick, the crown block, the traveling block,
and the wire rope drilling line;
c) drawworks (or hoist), a mast or derrick, the crown block, the engine, the wire
rope drilling line;
d) drawworks (or hoist), a mast or derrick, the control gear, the traveling block,
and the wire rope drilling line;

11. Around what do crew members wrap or spool wire rope drilling line?
a) revolving brake;
b) revolving crown block;
c) revolving drum;
d) revolving engine.

12. An auxiliary electric brake assists the main brake by
a) absorbing the momentum created by the load being raised or lowered;
b) lining up and connecting the compound with the engines and drawworks;
c) revolving the main drum by the load being raised or lowered;
d) absorbing the liquid created by refining of products.

13. What is a friction cathead?

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