NSC Agricultural Technology Advanced welding techniques: Various options are provided as

Question

Various options are provided as possible answers to the following questions. 
Write down the question number (1.1.1–1.1.10), choose the answer and make a cross (X) over the letter (A–D) of your choice in the ANSWER BOOK.

1.1.1 The plasma cutting machine cuts the metal with a/an ...
A water jet. 
B infra-red light beam. 
C electric arc. 
D mixture of burning gases.

1.1.2 The best gas mixture for cutting thick steel with a plasma cutting machine is ... because of its high cutting ability.
A argon and hydrogen
B oxygen and acetylene 
C propane and hydrogen 
D helium and oxygen

1.1.3 Oxyacetylene cannot be used to cut ...
A mild steel.
B cast iron.
C stainless steel.
D bronze.

1.1.4 ... does not cause undercutting when doing MIG welding.
A Welding speed that is too fast
B Welding current that is too high
C A root gap that is too small
D Poor welding technique.

1.1.5 If you see black smoke emitting from the exhaust pipe of a compression ignition engine, it indicates a/an ...
A worn valve-stem seal.
B rich air fuel mixture.
C worn injector tip.
D incorrect sparking plug.

Various options are provided as possible answers to the following questions - NSC Agricultural Technology - Question 1 - 2016 - Paper 1

Worked Solution & Example Answer:Various options are provided as possible answers to the following questions - NSC Agricultural Technology - Question 1 - 2016 - Paper 1

1.1.1 The plasma cutting machine cuts the metal with a/an ...

1.1.2 The best gas mixture for cutting thick steel with a plasma cutting machine is ...

1.1.3 Oxyacetylene cannot be used to cut ...

1.1.4 ... does not cause undercutting when doing MIG welding.

1.1.5 If you see black smoke emitting from the exhaust pipe of a compression ignition engine, it indicates a/an ...

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