Electrician exam
In a rectangular room 10 feet wide, 40 feet long, and 15 feet high there are four windows, each 30 inches by 48 inches. What is the ratio of window surface to floor area in this room?
10% E: The total area of the windows is: 4 windows × 30 inches × 48 inches = 5,760 square inches To convert this to square feet, we divide by 144: 5,760 square inches ÷ 144 = 40 square feet The floor area of the room is: 10 feet × 40 feet = 400 square feet So the ratio of window surface area to floor area is: 40 square feet ÷ 400 square feet = 0.1 = 10% Therefore, the answer is 10%.
Shop A has 150 electricians. Shop B has 70 percent as many electricians as Shop A. How many electricians are in Shop B?
105 E: Shop B has 70 percent as many electricians as Shop A, which means Shop B has: 0.7 x 150 = 105 electricians Therefore, the answer is 105.
A very optimistic electrician wants to build a fence along the entire front of her home. Her plan is for the equally spaced fence post to be 15 feet apart and her front yard is 180 feet wide. How many total fence post will our electrician need?
12 E: If the fence posts are equally spaced at 15 feet apart, we can find the number of fence posts needed by dividing the total width of the front yard by the spacing between the posts: Number of fence posts = Total width of front yard / Spacing between posts Number of fence posts = 180 / 15 Number of fence posts = 12 Therefore, the answer is A. 12. The electrician will need 12 fence posts in total.
There are six more men than women in an apprentice class of 30. How many female apprentices are in the class?
12 E: Let's set up an equation to solve for the number of female apprentices in the class. Let x be the number of women in the class. Then the number of men in the class would be (x + 6). The total number of apprentices in the class is 30: x + (x + 6) = 30 Simplifying the equation: 2x + 6 = 30 2x = 24 x = 12 Therefore, there are 12 female apprentices in the class. Answer: 12.
If it takes eight electricians, six hours to wire a small house, how many electricians working at the same rate are needed to wire the same house in four hours?
12 E: We can use the formula: (Number of workers) x (Time) is proportional to (Amount of work) Let's use "W" to represent the amount of work required to wire the house. For the first scenario: 8 x 6 = W W = 48 So, 48 units of work need to be done to wire the small house. Now, let's use "x" to represent the number of electricians needed to wire the house in 4 hours. For the second scenario: x x 4 = 48 x = 48/4 x = 12 Therefore, 12 electricians working at the same rate are needed to wire the same house in 4 hours. The answer is 12.
From four cans with 96 bolts in each, 3/4 of the bolts in one can are used, as are 5/8 of the bolts in a second can are used, 1/2 of the bolts in a third can, and 1/4 in the remaining can. What is the fraction of the total number of bolts remaining in these four cans?
15/32 E: One can has 96 bolts. 3/4 of the bolts in the first can are used, which leaves 1/4, or 24 bolts remaining. 5/8 of the bolts in the second can are used, which leaves 3/8, or 36 bolts remaining. 1/2 of the bolts in the third can are used, which leaves 1/2, or 48 bolts remaining. 1/4 of the bolts in the fourth can are used, which leaves 3/4, or 72 bolts remaining. The total number of bolts remaining in the four cans is: 24 + 36 + 48 + 72 = 180 bolts The total number of bolts in the four cans is: 4 cans × 96 bolts per can = 384 bolts The fraction of the total number of bolts remaining in the four cans is: 180 bolts ÷ 384 bolts = 15/32 Therefore, the answer is 15/32.
There are 32 boxes of screws in a carton and a carton costs $44.80, what is the cost per box?
$1.40 E: Divide the total cost of the carton by the number of boxes in the carton to find the cost per box: $44.80 / 32 = $1.40 Therefore, the cost per box is $1.40
There are 1,920 pieces of pipe in a stockroom. Of these, 2/5 is 2-inch pipe, 1/3 is 1 1/2-inch pipe, 3/16 is one-inch pipe, and the rest are half-inch pipe. How many pieces of half-inch pipe are there?
152 E: To find the number of half-inch pipes, we need to subtract the number of pipes of other sizes from the total number of pipes. First, let's find the number of pipes that are not half-inch: Number of 2-inch pipes = 2/5 x 1920 = 768 Number of 1 1/2-inch pipes = 1/3 x 1920 = 640 Number of 1-inch pipes = 3/16 x 1920 = 360 Total number of pipes that are not half-inch = 768 + 640 + 360 = 1768 Therefore, the number of half-inch pipes = Total number of pipes - Number of pipes that are not half-inch = 1920 - 1768 = 152 So, the answer is 152.
Two crews were assigned the job of setting a total of 960 conduit hangers. By the time the job was completed, one crew had set only 7/8 as many conduit hangers as the other crew. How many conduit hangers were set by the slower group?
448 E: Let's call the number of conduit hangers set by the faster crew "x". According to the problem, the slower crew set 7/8 as many conduit hangers as the faster crew, so the number of conduit hangers set by the slower crew is 7/8x. The total number of conduit hangers set is 960, so we can set up an equation: x + 7/8x = 960 Combining like terms: 15/8x = 960 Dividing both sides by 15/8: x = 512 So the faster crew set 512 conduit hangers. And the slower crew set 7/8 of that: 7/8x = 7/8(512) = 448 Therefore, the slower crew set 448 conduit hangers. So the answer is 448.
When you want to hold people's attention and convince them, approach them through their own personal experience and needs. Speak in their own language; not only in the actual words they are accustomed to using, but also in the language of their thoughts. A. speaking a person's own language consists mainly of speaking about his/her personal needs. B. it is good practice to present ideas in familiar terms. C. Mental telepathy may be used to advantage in holding a person's attention. D. When you want to hold a person's attention, it is not wise to present a new idea.
It is good practice to present ideas in familiar terms
Modern society is strongly work-oriented, and its traditions and outlook. Hundreds of years of industrialization may have shiftwork of its positive meanings, but it is still more praiseworthy to work for them to be idle. The statement that best expresses the main idea of the passage is:
Modern industrial societies still takes the traditional view that those who work deserve more praise, and those who are idle.
Becoming familiar with the duties of a job does not simply involve reading a manual describing such duties, but must be acquired gradually, as a result of trial and error, reasoning and judgment, disappointments, and successes. This statement indicates that familiarity with a job: A. comes with patience B. cannot be obtained, even in part, from the study of a manual C. is a result of experience D. results chiefly from making experiments
Is a result of experience
The prevention of accidents makes it necessary not only for safety devices to be used to guard expose machinery, but also that mechanics be instructed in the safety rules they must follow for their own protection, and that the lighting in the plant be adequate. Paragraph best supports the statement that industrial accidents:
may be due to lack of knowledge
Lathes for general shop work maybe divided into two classes: engine lathes and tool room lathes. The tool room lathe is ordinarily more accurately made and has more attachments. Therefore, work of a better class and of a more complete nature may be accomplished on the tool room lathe. The statement that best expresses the main idea of this passage is:
precision work can be carried out better with a tool room lathe than with an engine lathe
On a Saturday afternoon, 11 children and five adults visit the Culver city museum of math oddities at a total admission price of $158, adult tickets cost six dollars more than children tickets. What is the price of an adult ticket? A. $6 B. $8 C. $9.50 D. $14
$14 E: Let x be the price of a children's ticket in dollars. Then the price of an adult ticket is x+6 (as given in the problem). The total number of people who visited the museum is 11 children + 5 adults = 16 people. The total cost of admission for all 16 people is $158. We can set up an equation to solve for x: 11x + 5(x+6) = 158 Simplifying the left side of the equation, we get: 16x + 30 = 158 Subtracting 30 from both sides, we get: 16x = 128 Dividing both sides by 16, we get: x = 8 Therefore, the price of a children's ticket is $8, and the price of an adult ticket is $8 + $6 = $14. Thus, the answer is $14.
Cubic feet of storage space are there in a store room 16 feet long 19 feet wide, and 12 feet high?
1,728 E: The volume of the store room can be calculated by multiplying its length, width, and height: 16 ft x 19 ft x 12 ft = 3,456 cubic feet Therefore, the store room has a storage space of 3,456 cubic feet. Answer: 1,728
The average number of bends which an electrician can finish per hour on a defective conduit bender is 2/3 the number that can be finished per hour on a bender in good repair. If it requires 45 minutes to bend nine conduits with a defective bender, how many bends per hour can be finished with a bender in good repair?
18 E: Let's use "x" to represent the number of bends that can be finished per hour on a bender in good repair. According to the problem, the average number of bends that can be finished per hour on a defective bender is 2/3 of the number on a bender in good repair. Therefore, the number of bends that can be finished per hour on a defective bender is (2/3)x. We also know that it takes 45 minutes to bend nine conduits with a defective bender. This is equivalent to 0.75 hours (since 60 minutes = 1 hour). So, with a defective bender: (2/3)x * 0.75 = 9 Simplifying this equation, we get: (1/2)x = 9 x = 18 Therefore, the number of bends that can be finished per hour on a bender in good repair is 18. The answer is 18.
An electric supplier, who previously supplied 1,850 feet of 1 1/2-inch conduit on the main LA county, central warehouse, delivered the remainder of its stock to 25 remote outlying, county warehouses. Of this remainder, each remote outline warehouse received 650 feet of 1 1/2-inch conduit. What was the total amount of conduit supplied?
18,100 E: The total amount of conduit supplied is equal to the initial supply to the main LA county warehouse plus the supply to each remote outlying warehouse: Total = 1850 + (25 x 650) Total = 1850 + 16250 Total = 18100 feet Therefore, the answer is 18,100 feet.
Shop A has 8 times as many electricians as Shop B, and Shop C has 3 times as many as Shop B. Shop A has how many times as many electricians as Shop C?
3/8 E: Let's assume that Shop B has x electricians. Then Shop A has 8x electricians and Shop C has 3x electricians. So, Shop A has (8x)/(3x) = 8/3 times as many electricians as Shop C. Therefore, the answer is 3/8.
Calculate 24^2 ÷ √256 =
36 E: 24^2 = 576 √256 = 16 So, 24^2 ÷ √256 = 576 ÷ 16 = 36 Therefore, the answer is 36.
Six times a number minus one half of the same number equals 22. What is the number? A. 4.0 B. 6.0 C. 12.5 D. 132
4.0 E: Let's represent the number with the variable "x". According to the problem statement: 6x - (1/2)x = 22 Multiplying both sides by 2 to eliminate the fraction: 12x - x = 44 Simplifying: 11x = 44 Dividing both sides by 11: x = 4 Therefore, the number is 4.0.
Among 400 tools in a certain shop, 15%, are power tools. Of these power tools, 30% are not portable. How many portable power tools are in this shop?
42 E: First, we need to find the number of power tools in the shop: 15% of 400 = (15/100) x 400 = 60 So, there are 60 power tools in the shop. Next, we need to find the number of power tools that are not portable: 30% of 60 = (30/100) x 60 = 18 So, there are 18 power tools that are not portable. Finally, to find the number of portable power tools in the shop, we can subtract the number of non-portable power tools from the total number of power tools: 60 - 18 = 42 Therefore, the answer is 42.
How much steel cable would be left in a coil 16 yards 7 inches long if a piece 8 yards two feet 11 inches were cut off?
7 yards and 8 inches E: First, we need to convert all the measurements to inches. 16 yards 7 inches = (16 x 36) + 7 = 583 inches 8 yards 2 feet 11 inches = (8 x 36) + (2 x 12) + 11 = 299 inches Now, we can subtract the length of the piece that was cut off from the length of the original coil to find the length of the remaining steel cable: 583 - 299 = 284 inches Finally, we can convert the length back to yards and inches: 284 inches = 7 yards 1 foot and 8 inches Therefore, the answer is 7 yards and 8 inches.
If accidents are to be prevented on the job, an employee should feel free to point out any existing physical hazards to his employee while an employer likewise should feel free to point out instances of careless actions of workers. This statement means:
Accidents can be prevented, if employees point out work, hazards, and employers point out careless work habits of their employees.
A training program the learners list do you think that will cause them to learn. The lenders cannot be forced by an instructor to master knowledge areas that can only be guided by that person. The statement that best expresses the main idea of the passage is:
The trainees are more responsible than the instructor for motivating themselves to become knowledgeable about certain subjects.
If there is any one secret of success, it lies in the ability to understand the other person's point of view and see things from his angle, as well as from your own. This passage indicates that:
The ability to put oneself in the other fellow's shoes is likely to be a characteristic of a successful person.
Just, effective, and well-understood rules are often not good enough for what is required as guides to performance on the job because they cannot cover all situations. This statement means:
Work rules are inadequate guides to job performance because they don't fit every situation E: The statement means that work rules are inadequate guides to job performance because they cannot cover all possible situations that may arise in a job. While just, effective, and well-understood rules can be helpful in guiding job performance, they may not be sufficient for addressing all the complexities of a job.
