Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

A few of you may know that I'm a leader in 4-H for the small engines project in our club.  Here's some of the questions I'm asking the 12-18 year old this year.  There are 3 girls and 2 boys this year.  Let's see how you guys/gals stack up.

1.     T or F     An engine is a machine that converts a form of energy into mechanical force.

2.     Small engines are generally rated up to _______ HP.  A) 20     B) 25     C) 30     D) neither A, B or C

3.     Approximately ______% of the energy relaesed when fuel is oxidized in a typical small engine is converted into useful work.

4.     T or F     Heat is the resource that provides the capicity to do work.

5.     T or F     A substance can be in solid, liquid or gas state.

6.     Three methods of heat transfer are ______.     A) conduction, convection and locomotion     B) conduction, radiation and locomotion     C) conduction, convection and radiation     D) neither A, B or C

7.     Horsepower is a unit of power equal to _____.     A) 746W     B) 33,000 lb-ft/min     C) neither A or B     D) either A or B

8.     T or F     Both 4 stroke and 2 stroke engines complete 4 distinctive events during each cycle.

9.     T or F     Small engines are either air-cooled or liquid-cooled.

10.     When heat is added to water, it changes to ________.

11.     T or F     Generators and snow throwers commonly use a verticla shaft, horizontal cylinder engine.

12.     The first successful gasoline engine was developed by _______.     A) Thomas Savery     B) Eugene Lebon     C) James Watt     D) Neither A, B or C

13.     T or F     Kinetic energy is energy of motion.

14.     T or F     Small engines are either spark ignited or compression ignition based on how the fuel is ignited.

15.     When heat it added to ice, it changes to ________>

16.     T or F     The size of lawn tractor engines commonly range from 11 to 18 HP.

Let's see how you do and I'll post the answers later this week.

Sherri

Damn Sherri, other than the ones about heat, water, and ice, you stumped the hell out of me. I don't know too many people though that are going to know the answers to some of those unless they read some specific books/articles.

I don't feel bad though, I just came from Sears, I wanted to return my Craftsman hose nozzle that broke. The girl at the counter was clueless, told me I would need a receipt to return anything. I protested, it is a Craftsman! Finally I said, you don't know what you are doing do you, she said no i don't! Then a young man came out of the back to offer assistance, he didn't know what I was returning, thought it was a flashlight. I finally said you two are scaring me, what are you doing working in a hardware store?!?! I think they would have thought a screwdriver is a sex toy!

Good for you Sherri working with young people. In my case, I do it through Junior Achievement. I don't think all young people are idiots, honest.

The questions come from a small engine work book put out by Briggs.  The 4-H Leader's guide is beyond the pits.  But I found that the youth aren't learning that much in school and if you can offer them some of the stuff that they are missing - they might not think that it's not worth it.  Like the, "when am I ever going to use...".  It all comes back to you in the end - I am however trying to figure out where I am going to use have the stuff I enjoyed in school in the small engine business.  (I loved writing stories and poetry - still do.  Just can't find a way to work them in).

Sherri

PS - The kids do real well with the questions.  They sit down and talk them out and come up with a group answer most of the time.  7 times outta 10 they are right.

http://biosystems.okstate.edu/Home/fharry/3211/Review%20questions/1.pdf

Good test! Looks they use it at Oklahoma State University too.

Hey Marshall,

Good find.  The Briggs book isn't exactly laid out like that, but it's close.  Do they have more of those pages?

I'll have to post some of the MST (master service technician) questions.  They baffle me, but Chris is a Master Tech, one of the few around here.  Go figure.

Sherri

MissSnowshoveler wrote: Sherri,

I wasn't even looking for the test, I was looking for the answers. LMAO

OK I'll bite. Without cheating.

1.     T      An engine is a machine that converts a form of energy into mechanical force.

2.     Small engines are generally rated up to __C_____ HP.  A) 20     B) 25     C) 30     D) neither A, B or C

3.     Approximately ___60___% of the energy relaesed when fuel is oxidized in a typical small engine is converted into useful work.

4.     T      Heat is the resource that provides the capicity to do work.

5.     T     A substance can be in solid, liquid or gas state.

6.     Three methods of heat transfer are ___C___.     A) conduction, convection and locomotion     B) conduction, radiation and locomotion     C) conduction, convection and radiation     D) neither A, B or C

7.     Horsepower is a unit of power equal to __A___.     A) 746W     B) 33,000 lb-ft/min     C) neither A or B     D) either A or B

8.      F     Both 4 stroke and 2 stroke engines complete 4 distinctive events during each cycle.

9.     T      Small engines are either air-cooled or liquid-cooled.

10.     When heat is added to water, it changes to ___Steam_____.

11.      F     Generators and snow throwers commonly use a verticla shaft, horizontal cylinder engine.

12.     The first successful gasoline engine was developed by ___C____.     A) Thomas Savery     B) Eugene Lebon     C) James Watt     D) Neither A, B or C

13.     T      Kinetic energy is energy of motion.

14.     T      Small engines are either spark ignited or compression ignition based on how the fuel is ignited.

15.     When heat it added to ice, it changes to __Water______>

16.     T     The size of lawn tractor engines commonly range from 11 to 18 HP.

Sherri, Should I take my stuff in to have the oil checked? All guesses except for a few.

Rob,

You did very well.  12 out of 16. 

2.     2) 25HP

3)     30%

7)     D) either A or B

12.)     B) Eugene Lebon

Those seem to be the ones that trip up everyone.  It's still early here or I'd post all the asnwers together - but they can just read yours and then read this one.

Congrats on being brave.

Sherri

OK, I am going to embarrass myself but here goes.

1. T

2. D

3.  80%

4.  F

5.  5

6.  C

7.  C

8.  F

9.  T

10.  Hot Water?

11.  T

12.  D

13.  T

14.  T

15.  Water

16.  T

That was fun.  Also made me realize I don't know much about this stuff lol.....

Glad I have a carreer or I would be in trouble lol.....

C 

ChrisS,

Yeah you would be in a little trouble.  8/16, 2. d  3. 30% 4.T 5.I'm not sure what the 5 is for 7.d 10. hot water is good, but it's steam, 11. F 12. B

I'll try the next test later.

Sherri

Miss SS,

Just some thing to think about on your questions.

When you have enough BTU"s you will change water to steam, otherwise just hot water!!! I hope you don't get burned  when you take a shower. Rember you have added heat to the water in your water heater, but no steam!! Question should be rewritten. Same with #15. go from a temp of 30 below to 10 below, you have added heat, but you still have ICE!

                                                              Fred