Papersbyjol

What is biology? - ANSWERThe scientific study of life. 7 characteristics of life? (Properties that we use to define what life is.) - ANSWER1. Order 2. Regulation 3. Energy Processing 4. Evolutionary Adaptation 5. Response to the Environment 6. Reproduction 7. Growth and Development Hypothesis vs. theory? - ANSWERHypothesis: A testable explanation for a set of observations based on the available data and guided by inductive reasoning. A hypothesis is narrower in scope than a theory...

Scientific method: - ANSWER1) Observation 2) Question 3) Hypothesis 4) Design an experiment 5) Prediction 6) Do experiment/collect data 7) Analyze data What 4 elements make up 96% of living matter? - ANSWERCarbon, hydrogen, oxygen, nitrogen Atomic Number - ANSWERNumber of protons in the nucleus Acid - ANSWERAny substance that increases the H+ concentration of a solution Base - ANSWERAny substance that reduces the H+ concentration of a solution Acid pH: - ANSWERpH<7 Ba...

The steering wheel grabs and binds only at certain points along the steering wheel's rotation. Technician A says the steering shaft universal joint is binding and should be inspected for wear. Technician B says the intermediate shaft may need to be replaced. Who's correct - ANSWERBoth There's a squeak in the steering column when the steering wheel is turned in either direction. All of the following components will result in a noisy steering column except. 1.Steering coupling 2. Cl...

A customer complains that the steering lacks power assist all the time. Tech a says that the power steering pump drive belt could be slipping or loose. Tech b says that worn outer tie rod ends could be the cause. Who is correct? - ANSWERTech A Defective wheel bearings usually sound like a? - ANSWERGrowl, rumble, snow tires A defective outer CV joint will usually make a clicking noise when? - ANSWERWhile turning and moving The proper lubricant usually specified for use in a differential ...

Which of the following does not require a TPM warning system reset/relearn procedure? -Tire pressure adjustment -Tire rotation -Sensor replacement -Tire replacement - ANSWERTire pressure adjustment A - An incorrect wheel can affect tire clearance, or speedometer & odometer calibrations. B - The wrong size wheel can also affect the antilock brake system - ANSWERBoth A - Load-carrying ball joits may have a small amount of play in them. B - Follower ball joints should have some p...

Which of the following is true about control arm bushings? A: They are located between the frame and the control arm. B: Worn control arm bushings result wheel shimmy. C: They are tightened on while unloaded and the vehicle is raised in the air D: Both A or B - ANSWERD: Both A or B Technician A says that leaf spring shackle swivels and allows the spring to flatten as the vehicle travels over bumps in the road. Technician B says that a single crack in the longest blade of a multi-leaf leaf...

reaction force - ANSWERA force that acts in the opposite direction to another force. rigid-axle coil-spring suspension - ANSWERA dead axle that uses a coil spring. roll - ANSWERMovement of a vehicle around its x-axis (the imaginary line down the center of the vehicle from front to back). It is commonly referred to as body roll or lean; when cornering, the body will try to move to the outside of the corner against the suspension. scrub radius - ANSWERThe distance between two imaginary po...

What is the purpose of the carcass plies in a tire? - ANSWERTo absorb forces that are transmitted to the tire. What are the safety demands that are placed on the vehicle's tires? - ANSWERThey have to be damage resistant and give good grip to the road surface. The tire, shown in the image to the left, has wear across the surface. What can cause this type of wear? - ANSWERThe tire pressure is too high. What is the distance, between the spring coils, on a vehicle's suspension called?...

The most common type of power steering hydraulic pump used on most Class 8 trucks/tractors equipped with power steering systems is: A. Gear B. Vane C. Plunger D. Centrifugal - ANSWERB. Vane Technician A says to inflate mounted tires in a safety cage or using a portable lock ring guard. Technician B says to first mount the tire on the truck, then inflate to the proper tire pressure. A. A only B. B only C. Both A and B D. Neither A nor B - ANSWERA. A only While performing an inspect...

What is the first step in working with the power steering system? - ANSWERDisarm airbag (SRS) system. What should be checked before adjusting the power steering fluid level? - ANSWERFluid type. What should be inspected and replaced in the power steering system? - ANSWERHoses, fittings, O-rings, coolers, and filters. What should be done before flushing the power steering system? - ANSWERRetrieve and record diagnostic trouble codes (DTCs). What should be inspected and replaced in the s...

The circuit to the airbag inflation module is connected from the steering column to the steering wheel through which component? - ANSWERClockspring (coil) Recirculating steel balls are used in most conventional steering gears because they ________. - ANSWERReduce friction Which conventional steering gear adjustment should be the first performed? - ANSWERWorm bearing preload The two rack and pinion steering gear adjustments include ________. - ANSWERPinion bearing preload and rack suppor...

It is proper procedure that all lug nuts must be torqued and that all lug nuts must be properly sequenced when tightening. - ANSWERTrue All of the following statements about wheel bolt patterns are correct, EXCEPT: - ANSWERA.) Some bolt patterns consist of 4 holes B.) Some bolt patterns consist of 5 holes C.) Bolt patterns always consist of an odd number of holes D.) Bolt patterns on larger, heavier vehicles usually have more wheel bolt holes. Answer C The edge of the rim that creates a...

Technician A says that the load index marked on the tire indicates the maximum load the vehicle can carry. Technician B says that the load index marked on the tire indicates the maximum load each tire is designed to carry. Which technician is correct? - ANSWERTech B only Some vehicles use lug bolts instead of lug nuts. - ANSWERTrue Which part of the wheel shown is responsible for holding the tire beads in place? - ANSWERB Identify this suspension type. - ANSWERIndependent Suspension ...

A device that is used on suspensions to primarily absorb energy and dampen suspension oscillation is called: A. An equalizer bracket. B. A torque rod. C. A spring. D. A shock absorber. - ANSWERAnswer A is incorrect. An equalizer bracket is used to mount and house the equalizer. Answer B is incorrect. The torque arm is used to control axle rotational forces and to maintain and adjust axle alignment. Answer C is incorrect. The spring assemblies distribute the vehicle load across the frame an...

An owner of a power steering equipped car complains of a pull to the right. What could cause this? A. internal leakage in the steering gear control valve B.poor wheel alignment C. Low tire pressure D. All the above - ANSWERD all the above A car with power rack and pinion steering has a shimmy. Tech A says that worn rack to frame mounting bushings could be the cause. Tech B says that dynamic tire balance could be the cause. Who is right? A. Tech a B. Tech B C. Both D. Neither - ANSWERC...

Which of the following is the proper way to adjust the rack yoke bearing? A. Tighten to 75 ft lbs. B. Tighten to 5 inch lbs. C. Tighten and then back off the original equipment manufacturer's (OEM) specifications. D. Tighten to 0.002" end-play. - ANSWERTighten and then back off the originial equipment manufacturer's (OEM) specifications. Many OEMs will recommend that the technician tighten to a specification then back off a certain number of degrees. A customer says that the stee...

Which of the following would be a typical automobile front end camber setting? A: -4 1/2" B: +6" C: -3 ± 2 1/4" D: + 1/4" - ANSWERD A mechanic finds hat a front tire is worn on the inside of the tread only. The mechanic checks the air pressure nd finds it correct. What is causing this problem? A: The camber is set too positive B: The camber is set too negative C: The castor is set too positive D: The castor is set too negative - ANSWERB A car will pull to: A: Th...

Unitized vehicle bodies (Unibodies) have these special features and applications: A. Are typically used in large rear-wheel- drive vehicles. B. Have special steel plates in the hood and truck lid to protect the passengers. C. All portions of the unibody are constantly load bearing. D. Have a structured box like compartment to protect the passengers - ANSWERD. Have a structured box like compartment to protect the passengers The purpose of the upper control arm and the lower control arm in ...

A vehicle wanders when driven on normal road surfaces. The steering wheel exhibits more play than usual. Which of these should the technician do first? A. Measure power steering pump output pressure. B. Flush the power steering fluid. C. Check for worn steering linkage. D. Measure front rotor lateral runout. - ANSWERC. Check for worn steering linkage During a pre-alignment inspection of a high mileage vehicle, a technician sees oil dripping from one of the vehicle's front shock absorbe...

1500 psi - ANSWERHigh pressure hoses have to be used on the high pressure side of the power steering system because pressures can reach as high as __________. A) 200 psi B) 750 psi C) 2500 psi D) 1500 psi False - ANSWERAll power steering pumps have integral reservoirs. True or False? all of the above are correct - ANSWERWhich of the following represent typical power steering pressures? A) over 750 psi when slowly maneuvering a parking lot B) about 450 psi when cornering C) less than...