Technician A says balance shafts are used to counteract vibration ...

[jho37]

Technician A says balance shafts are used to counteract vibration created in the engine. Technician B says proper balancing of the engine is important for smooth operation. Which technician is correct?
 
  A) Technician A B) Technician B C) Both technicians D) Neither technician

Question 2

Why does a 4-cylinder engine have very little, if any, primary vibration?
 
  A) Uses a splayed crankshaft
  B) Bore is small, reducing the primary vibration
  C) Two cylinders fire at the same time, reducing the primary vibration
  D) Two pistons traveling upward at the same time two pistons are traveling downward

[johnharpe]

Answer to Question 1

C

Answer to Question 2

D

[jho37]

Great answer, keep it coming

[carlsona147]

Thanks for the timely response, appreciate it