Various Mem

Question 1

Wrench for 1/4 “ bolt

Answer 1

7/16 or 3/8

Question 2

Wrench for 5/16” bolt

Answer 2

1/2

Question 3

Wrench for 3/8” bolt

Answer 3

9/16

Question 4

Wrench for 7/16” bolt

Answer 4

5/8

Question 5

Wrench for 1/2 “ bolt

Answer 5

3/4

Question 6

Wrench for 9/16 “ bolt

Answer 6

13/16

Question 7

M10 x 1.5 x 50
Each are :

Answer 7

M = metric
10 = diameter in mm
1.5= pitch
50 = length

Question 8

3/8 - 16 UNC x 4
Each is

Answer 8

3/8 = diameter in inches
16 = threads per inch
UNC= course thread
4 = lenth

Question 9

1/2 - 24 UNF × 6
EACH IS

Answer 9

1/2 = diameter in inches
24 = threads per inch
UNF = fine thread
6 = bolt length

Question 10

1/2 or 3/4 inch pipe
1) # of threads per inch
2) # length of threads to be cut

Answer 10

1)14
2)10.5

Question 11

1” to 2” pipe
1) threads per inch
2) length of threads to be cut

Answer 11

1)11.5
2)1”

Question 12

of wraps for Teflon tape

Answer 12

2

Question 13

Capacitance symbol and unit

Answer 13

U: farad (F)
S: C

Question 14

Inductance unit and symbol

Answer 14

U: henry (H)
S: L

Question 15

Capacitance constant

Answer 15

8.85 x 10 ^-12

Question 16

Capacitance in farads calc

Answer 16

C = (cap const) Er A/d
Cap const : 8.85 × 10^-12
Er : relative perm of dielectric
A : area of plate in m^2
d : distance between plates m

Question 17

What is schedule of pipe

Answer 17

How thick the wall is

Question 18

Min # of teeth engagement on a hacksaw

Answer 18

2

Question 19

A good solder joint is

Answer 19

Shiny

Question 20

Primary standard is a

Answer 20

Physical standard

Question 21

Efficiency formula

Answer 21

Power out/power in x 100

Question 22

Who’s law is with springs?

Answer 22

Hookes

Question 23

To convert cm^3 to m^3 you

Answer 23

÷ by 1,000,000
Or 10 ^ -6

Question 24

Def: natural convection

Answer 24

Density differences drive heat circulation

Question 25

Forced convection

Answer 25

Circulation is forced by a pump or a fan

Question 26

It takes ____ kj of energy to raise 1 kg of water 1 degree c

Answer 26

4.186 kj

Question 27

Weight of 1 cubic meter of water

Answer 27

1000 kg or 1 tonne