Question

technician a says that the purpose of having two pistons in the master cylinder is to split the brake hydraulic system into two parts. technician b says that the purpose of having two pistons in the master cylinder is to increase braking force. who is right?
a only
b only
both a and b
neither a nor b
which of the following is not part of the master cylinder?
pushrod
reservoir
pistons
cylinder
abs solenoid valves are operated by ____.
pump hydraulic pressure
signals from a computer
brake pedal pressure
feedback from the calipers and
wheel cylinders

Explanation:

First Question (Technician A and B)

The master cylinder's two pistons create two separate hydraulic circuits (e.g., for front and rear brakes). If one circuit fails, the other still works, so Technician A's claim about splitting the brake hydraulic system is correct. Two pistons don't directly increase braking force (braking force depends on factors like caliper design, brake pad friction, etc.), so Technician B is wrong.

The master cylinder components include the reservoir (holds brake fluid), pistons (create hydraulic pressure), and the cylinder (housing). A pushrod is part of the brake pedal linkage, not the master cylinder itself.

ABS (Anti - lock Braking System) solenoid valves are controlled by the ABS computer (ECU). The computer sends electrical signals to the solenoids to open/close, adjusting brake pressure. Pump hydraulic pressure is for pressure generation, brake pedal pressure is input to master cylinder, and feedback from calipers/wheel cylinders is for sensor input, not solenoid operation.

Answer:

A only

Second Question (Not part of master cylinder)