Agricultural/Bioengineering Tractor and Power Engineering 2

Question 1

The function of a differential in a tractor axle is to:

Accepted Answer

Allow drive wheels to rotate at different speeds when turning

Answer

The differential allows the inside and outside drive wheels to rotate at different speeds during turns without binding.

Question 2

Turbocharging a diesel engine improves performance by:

Accepted Answer

Forcing more air into the combustion chamber to allow more fuel combustion

Answer

A turbocharger uses exhaust energy to compress intake air, increasing air density and allowing greater fuel injection for more power.

Question 3

MFWD (Mechanical Front-Wheel Drive) on a tractor improves field performance by:

Accepted Answer

Adding drive torque to the front wheels to improve traction

Answer

MFWD engages the front axle to deliver power to all four wheels, significantly improving traction in soft or wet field conditions.

Question 4

The Nebraska Tractor Test is significant because it provides:

Accepted Answer

Standardized performance data (power, fuel efficiency, hydraulics) for tractors sold in the US

Answer

The Nebraska Tractor Test Laboratory conducts standardized OECD tests and publishes official tractor performance data for US buyers.

Question 5

Hydraulic remote cylinders on a tractor allow the operator to:

Accepted Answer

Actuate external hydraulic cylinders on implements from the tractor seat

Answer

Remote hydraulic couplers supply pressurized oil to implement cylinders, enabling in-cab control of equipment functions.

Agricultural/Bioengineering Practice Test