22. If 3 different size watt lights are connected to electrical power in such a way as to allow each light to operate at raqted voltage and amperage, how should they be wired?
A) in series
B) in parallel
C) in a split connection with 1 light series and 2 parallel
D) in a split connection with 2 lights in a series and 1 parallel
23. What operation causes the relay contacts of a mechanical magnetic relay to open or close?
A) centrifugal force caused by the motor%26#039;s shaft rotation
B) magnetic field produced by the electromagnetic coil
C) gravitational force acting on the weighted relay
D) the solenoid action of a motors drive shaft
24. Which motor type is appropriate for a single phase hard starting load such as an air compressor?
A) capacitor start induction run motor
B) shaded pole motor
C) split phase motor
D) 3-phase induction run motor
25. a mechanical magnetic relay is used to control an 120 volt motor. a low voltage control, operating at 12 volts, controls the relay%26#039;s magnetic coil. Which of the following statements is correct?
A) the relay contacts carry low voltage and low voltage passes through the coil
B) the relay contacts carry the motor amperage and the motor amperage passes through the oil
C) the relay contacts carry the motor amperage and low voltage passes through the coil
D) the relay contacts carry only the low voltage and the motor amperage passes through the coil
26. Automatic electrical controlling sensing environmental variables, changes in conditions, and changes in locations are used to operate electrical equipment. Which are all automatic electrical controls?
A) thermostat, humidistat, and smoke detector
B) toggle switch, radon sensor, and traffic light
C) fuel gauge, ammeter, and watts-hour meter
D) photo electric cell, pull chain, and thermometer
27. If 3 light bulbs 100 watts, 200 watts, and 300 watts are connected in series to 115 volts, which of the following is true?
A) each light is operated at the same brightness
B) 100 watt light is brightest
C) 200 watt light is brightest
D) 300 watt light is brightest
28. If 3 light bulbs, all 75 watts, are connected in parallel to 110 volts, which of the following is true?
A) each light operates at same voltage
B) each light operates at the same amperage
C) each light operates at the same wattage
D) each light operates at the same resistance (ohms)
29. What current (amperage) is required for a 3.6 kilowatt heater when it operates at 250 volts?
A) 0.02 amps
B) 15.00 amps
C) 864.00 amps
D) 864,000.00 amps
30. A tow horsepower, single phase, dual voltage motor is operating at 115 volts and 24 amps when fully loaded. If the motor connections are rewired to operate at 230 volts and it is connected to a 230 volt power source, what will happen to the full load amperage of the motor?
A) decrease from 24 to 12 amps
B) increase from 24 to 48 amps
C) decrease from 230 amps to 115 amps
D) increase from 115 amps to 230 amps
31. What term is used to describe a piece of wood or metal used to reinforce a wood joist?
A) girder
B) girder
C) purlin
D) girt
32. What is the term used to designate lumber with nominal thickness from 2 inches to 4 inches and a nominal width from 2 inches to 16 inches?
A) board
B) dimension lumber
C) plank
D) timber
33. Which of the following is not a typical fastener used on wooden truss members?
A) pop-rivet
B) bolt
C) gusset plate
D) nail
34. Which of the following is not a common load placed on wood construction members?
A) compression
B) bending
C) shearing
D) lamination
35. What term describes the expanded foundation provided for posts on a post fram building to prevent a support post from settling?
A) gusset
B) footing
C) purlin
D) header
36. What term describes a construction member placed between posts and girders in post fram buildings to strengthen and add rigidity to them?
A) brace
B) purlin
C) joist
D) ridge board
37. Which of the following nail sizes has the greatest number of nails in one pound?
A) 16 penny nails
B) 12 penny nails
C) 10 penny nails
D) 8 penny nails
38. What term identifies the highest point of a gable roof?
A) rafter
B) purlin
C) ridge
D) gusset
39. How many sheets of standard sized, 3/4 inch plywood are needed to completely cover a floor measuring 36feet by 24feet?
A) 24 sheets
B) 27 sheets
C) 36 sheets
D) 40 sheets
40. What is the approximate surface area in square inches, for the end of a round concrete post with a diameter of 6 inches, area of circle= Pi times diameter.
A) 18.84 sq inches
B) 28.26 sq inches
C) 73.37 sq inches
D) 113.04 sq inches
41. Moisture content is a key factor influencing grain damage during harvest. generally, less damage occurs if the grain has what percent moisture content?
A) 5%
B) 10%
C) 15%
D) 20%
42. In addition to stand ability and|||26 a
31 a
32 b
34 d
35 b
36 a
41 c
Somebody hasn%26#039;t been studying have they?|||22 b
23 b
24 a
25 c
26 d ?
27 a
28 a
29 b
30 a
33 a
37 d
38 c
39 b
40 a
You are on your own with the rest.
