3. External Standards Quiz
This quiz is designed to the candidates knowledge of the External Standards course.
- 1.
IP Stands for?
Explanation
The correct answer is "Ingress Protection." Ingress Protection (IP) is a rating system used to classify the degree of protection provided by an enclosure against the intrusion of solid objects (like dust) and liquids (like water). The IP rating consists of two digits, with the first digit representing the level of protection against solids and the second digit representing the level of protection against liquids. The IP rating is commonly used to determine the suitability of electronic devices, equipment, and enclosures for different environments and conditions.Rate this question:
- 2.
IP is a standard from which region?
- A.
United States
- B.
Europe
- C.
India
- D.
Canada
Correct Answer
B. EuropeExplanation
IP is a European StandardRate this question:
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- 3.
IP ratings measure protection against which of the following?
- A.
Solid Objects
- B.
Water
- C.
Dust
- D.
Short Circuiting
- E.
Accidental Contact
Correct Answer(s)
A. Solid Objects
B. Water
C. Dust
E. Accidental ContactExplanation
IP ratings measure the level of protection provided by an electrical enclosure against solid objects, water, dust, and accidental contact. The rating system is used to determine the suitability of an enclosure for different environments and to ensure the safety and functionality of electronic devices. The higher the IP rating, the greater the protection offered against these elements.Rate this question:
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- 4.
In India, which is the certifying body for IP Ratings?
Correct Answer(s)
CPRI
Central Power Research InstituteExplanation
CPRI, which stands for Central Power Research Institute, is the certifying body for IP Ratings in India.Rate this question:
- 5.
NEMA is a standard from which region?
- A.
United States
- B.
Europe
- C.
India
- D.
Canada
Correct Answer
A. United StatesExplanation
NEMA is a North American StandardRate this question:
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- 6.
NEMA ratings are certified by an independent laboratory.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
NEMA ratings are self-certified by the manufacturer.Rate this question:
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- 7.
RAL is a standard from which region?
- A.
United States
- B.
Europe
- C.
India
- D.
Canada
Correct Answer
B. EuropeExplanation
RAL is a European StandardRate this question:
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- 8.
The RAL Codes for Algypug's standard products are:
- A.
RAL 2001, RAL 9000, RAL 7035
- B.
RAL 2000, RAL 7002, RAL 7032
- C.
RAL 2000, RAL 9002, RAL 7032
- D.
RAL 2000, RAL 7022, RAL 7035
Correct Answer
D. RAL 2000, RAL 7022, RAL 7035Explanation
The given answer, RAL 2000, RAL 7022, RAL 7035, matches the third set of RAL codes provided.Rate this question:
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- 9.
RAL 2000, RAL 7022, RAL 7035 can be described as?
- A.
Light Grey, Dark Grey, Orange
- B.
Dark Grey, Orange, Light Grey
- C.
Orange, Light Grey, Dark Grey
- D.
Orange, Dark Grey, Light Grey
Correct Answer
D. Orange, Dark Grey, Light GreyExplanation
The colors RAL 2000, RAL 7022, and RAL 7035 can be described as Orange, Dark Grey, and Light Grey respectively.Rate this question:
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- 10.
If a customer asks for a custom colour, it is advisable to do which of the following?
- A.
Check with Stores/Purchasing about availability
- B.
Request customer to give the RAL code
- C.
Have the customer cross check the shade against a sample piece
Correct Answer(s)
A. Check with Stores/Purchasing about availability
B. Request customer to give the RAL code
C. Have the customer cross check the shade against a sample pieceExplanation
When a customer asks for a custom colour, it is advisable to check with Stores/Purchasing about availability to ensure that the desired colour can be obtained. Additionally, requesting the customer to give the RAL code is important as it is a standardized system for defining colours, which helps in accurately reproducing the desired shade. Lastly, having the customer cross check the shade against a sample piece is essential to ensure that the final product meets their expectations and matches their desired colour.Rate this question:
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- 11.
The first digit in a IP rating indicates protection against?
- A.
Moisture
- B.
Water
- C.
Dust
- D.
Solid Objects
Correct Answer(s)
C. Dust
D. Solid ObjectsExplanation
The first digit in an IP rating indicates the level of protection against solid objects. The higher the digit, the greater the protection. In this case, the answer is Dust and Solid Objects, as these are the types of solid objects that the IP rating is indicating protection against.Rate this question:
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- 12.
The second digit in a IP rating indicates protection against?
- A.
Moisture
- B.
Water
- C.
Dust
- D.
Solid Objects
Correct Answer(s)
A. Moisture
B. WaterExplanation
The second digit in an IP rating indicates the level of protection against water and moisture. The IP rating system is used to classify the degree of protection provided by an electrical enclosure against various environmental factors. The second digit specifically focuses on the level of protection against water and moisture, ranging from 0 (no protection) to 9 (protection against powerful water jets or immersion). Therefore, the correct answer is Moisture, Water.Rate this question:
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- 13.
If the first digit of an IP rating is 1, it indicates protection against solid objects of which size, and greater?
- A.
30mm
- B.
40mm
- C.
50mm
- D.
60mm
Correct Answer
C. 50mmExplanation
An IP rating is a standard used to measure the level of protection provided by an enclosure against solid objects and liquids. The first digit of an IP rating indicates the level of protection against solid objects, with 1 indicating protection against objects larger than 50mm. Therefore, if the first digit of an IP rating is 1, it indicates protection against solid objects of 50mm size or greater.Rate this question:
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- 14.
If the first digit of an IP rating is 2, it indicates protection against solid objects of which size, and greater?
- A.
10mm
- B.
12mm
- C.
14mm
- D.
16mm
Correct Answer
B. 12mmExplanation
If the first digit of an IP rating is 2, it indicates protection against solid objects of size 12mm and greater. The IP rating is a standard used to classify the degree of protection provided by an enclosure against the intrusion of solid objects and liquids. The first digit of the IP rating represents the level of protection against solid objects. In this case, a rating of 2 means that the enclosure provides protection against solid objects larger than 12mm, but not completely dust-tight.Rate this question:
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- 15.
If the first digit of an IP rating is 3, it indicates protection against solid objects of which size, and greater?
- A.
2mm
- B.
2.5mm
- C.
3mm
- D.
3.5mm
Correct Answer
B. 2.5mmExplanation
If the first digit of an IP rating is 3, it indicates protection against solid objects of size 2.5mm and greater. The IP rating system is used to classify the level of protection provided by an enclosure against the intrusion of solid objects and liquids. The first digit of the IP rating refers to the level of protection against solid objects, with a rating of 3 indicating protection against objects larger than 2.5mm.Rate this question:
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- 16.
If the first digit of an IP rating is 4, it indicates protection against solid objects of which size, and greater?
- A.
0.5mm
- B.
1mm
- C.
1.5mm
- D.
2mm
Correct Answer
B. 1mmExplanation
An IP rating is a standard that indicates the level of protection provided by an enclosure against various elements, including solid objects. The first digit of an IP rating represents the level of protection against solid objects. In this case, if the first digit is 4, it indicates protection against solid objects larger than 1mm in size.Rate this question:
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- 17.
If the first digit of an IP rating is 5, it indicates that the enclosure is dust tight
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
If the IP rating starts with 5, it means that the enclosure is dust protected but not dust tight.Rate this question:
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- 18.
An IP rating starting with 6 means that it is dust tight.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
An IP rating starting with 6 indicates that the device is completely dust tight. This means that it is designed to prevent any dust particles from entering the device, ensuring its protection against dust-related damage. Therefore, the statement "An IP rating starting with 6 means that it is dust tight" is true.Rate this question:
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- 19.
If the second digit in an IP rating is 1, it means it is protected against what?
- A.
Protected against sprayed water at up to a 60 degree angle
- B.
Protected against the short term effects of immersion
- C.
Protected against splashing water from all directions
- D.
Vertically dripping water
- E.
Protected against water jets
- F.
Protected against heavy seas and streaming water
- G.
Protected against submersion
- H.
Protected against dripping water at a 15 degree angle
Correct Answer
D. Vertically dripping water -
- 20.
If the second digit in an IP rating is 2, it means it is protected against what?
- A.
Protected against sprayed water at up to a 60 degree angle
- B.
Protected against the short term effects of immersion
- C.
Protected against splashing water from all directions
- D.
Vertically dripping water
- E.
Protected against water jets
- F.
Protected against heavy seas and streaming water
- G.
Protected against submersion
- H.
Protected against dripping water at a 15 degree angle
Correct Answer
H. Protected against dripping water at a 15 degree angleExplanation
An IP rating is a standard used to classify the level of protection provided by an electronic device against the intrusion of solid objects and water. The second digit in an IP rating refers specifically to the level of protection against water. In this case, if the second digit is 2, it means that the device is protected against dripping water at a 15 degree angle. This indicates that the device can withstand water droplets falling at a specific angle without causing any damage or affecting its functionality.Rate this question:
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- 21.
If the second digit in an IP rating is 3, it means it is protected against what?
- A.
Protected against sprayed water at up to a 60 degree angle
- B.
Protected against the short term effects of immersion
- C.
Protected against splashing water from all directions
- D.
Vertically dripping water
- E.
Protected against water jets
- F.
Protected against heavy seas and streaming water
- G.
Protected against submersion
- H.
Protected against dripping water at a 15 degree angle
Correct Answer
A. Protected against sprayed water at up to a 60 degree angleExplanation
An IP rating is a standard used to classify the degree of protection provided by an enclosure against the intrusion of solid objects and water. The second digit in the IP rating indicates the level of protection against water. In this case, if the second digit is 3, it means that the device is protected against sprayed water at up to a 60 degree angle. This means that the device can withstand water being sprayed on it from various directions at a specific angle without being damaged.Rate this question:
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- 22.
If the second digit in an IP rating is 4, it means it is protected against what?
- A.
Protected against sprayed water at up to a 60 degree angle
- B.
Protected against the short term effects of immersion
- C.
Protected against splashing water from all directions
- D.
Vertically dripping water
- E.
Protected against water jets
- F.
Protected against heavy seas and streaming water
- G.
Protected against submersion
- H.
Protected against dripping water at a 15 degree angle
Correct Answer
C. Protected against splashing water from all directionsExplanation
The correct answer is "Protected against splashing water from all directions." The IP rating system is used to classify the degree of protection provided by an enclosure against the intrusion of solid objects (first digit) and water (second digit). The second digit indicates the level of protection against water, with different numbers representing different levels of protection. In this case, a rating of 4 means that the device is protected against splashing water from all directions.Rate this question:
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- 23.
If the second digit in an IP rating is 5, it means it is protected against what?
- A.
Protected against sprayed water at up to a 60 degree angle
- B.
Protected against the short term effects of immersion
- C.
Protected against splashing water from all directions
- D.
Vertically dripping water
- E.
Protected against water jets
- F.
Protected against heavy seas and streaming water
- G.
Protected against submersion
- H.
Protected against dripping water at a 15 degree angle
Correct Answer
E. Protected against water jetsExplanation
An IP rating is a standard that indicates the level of protection provided by an enclosure against the intrusion of solid objects and liquids. The second digit in an IP rating represents the level of protection against water. In this case, a rating of 5 means that the device is protected against water jets. This means that it can withstand water projected from a nozzle with a 6.3mm diameter, from any direction, without harmful effects.Rate this question:
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- 24.
If the second digit in an IP rating is 6, it means it is protected against what?
- A.
Protected against sprayed water at up to a 60 degree angle
- B.
Protected against the short term effects of immersion
- C.
Protected against splashing water from all directions
- D.
Vertically dripping water
- E.
Protected against water jets
- F.
Protected against heavy seas and streaming water
- G.
Protected against submersion
- H.
Protected against dripping water at a 15 degree angle
Correct Answer
F. Protected against heavy seas and streaming water -
- 25.
If the second digit in an IP rating is 7, it means it is protected against what?
- A.
Protected against sprayed water at up to a 60 degree angle
- B.
Protected against the short term effects of immersion
- C.
Protected against splashing water from all directions
- D.
Vertically dripping water
- E.
Protected against water jets
- F.
Protected against heavy seas and streaming water
- G.
Protected against submersion
- H.
Protected against dripping water at a 15 degree angle
Correct Answer
B. Protected against the short term effects of immersion -
- 26.
If the second digit in an IP rating is 8, it means it is protected against what?
- A.
Protected against sprayed water at up to a 60 degree angle
- B.
Protected against the short term effects of immersion
- C.
Protected against splashing water from all directions
- D.
Vertically dripping water
- E.
Protected against water jets
- F.
Protected against heavy seas and streaming water
- G.
Protected against submersion
- H.
Protected against dripping water at a 15 degree angle
Correct Answer
G. Protected against submersion -
- 27.
If an enclosure is said to be rated to IP 55, it means that it is...
- A.
Dust protected, and protected against submersion
- B.
Dust tight, and protected against splashing water from all sides
- C.
Dust protected, and protected against splashing water from all sides
- D.
Dust tight, and protected against water jets
- E.
Dust protected, and protected against water jets
Correct Answer
E. Dust protected, and protected against water jetsExplanation
The correct answer is "Dust protected, and protected against water jets." When an enclosure is rated to IP 55, it means that it provides protection against dust ingress and is also protected against water jets from all directions. This indicates that the enclosure is designed to prevent the entry of dust particles and can withstand the force of water jets without allowing water to enter.Rate this question:
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- 28.
If an enclosure is said to be rated to IP 67, it means that it is...
- A.
Dust protected, and protected against the short term effects of immersion
- B.
Dust tight, and protected against the short term effects of immersion
- C.
Dust tight, and protected against heavy seas and streaming water
- D.
Dust protected, and protected against heavy seas and streaming water
Correct Answer
B. Dust tight, and protected against the short term effects of immersionExplanation
The correct answer is "Dust tight, and protected against the short term effects of immersion." This means that the enclosure is designed to prevent dust from entering and is also able to withstand temporary immersion in water without being damaged.Rate this question:
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- 29.
A NEMA Type 4 enclosure is
- A.
Intended for for only outdoor use
- B.
Protected against windblown dust and rain
- C.
Splashing water
- D.
Hose directed water
- E.
Undamaged by the formation of ice on the enclosure
Correct Answer(s)
B. Protected against windblown dust and rain
C. Splashing water
D. Hose directed water
E. Undamaged by the formation of ice on the enclosureExplanation
A NEMA type 4 enclosure is for indoor and outdoor useRate this question:
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- 30.
If an enclosure is indicated a NEMA 4X, the ''X" indicates what?
Correct Answer(s)
Corrosion
Corrosion Resistance
Stainless Steel
SSExplanation
The "X" in NEMA 4X indicates the level of protection against corrosion. NEMA 4X enclosures are designed to be highly resistant to corrosion, making them suitable for use in harsh environments where exposure to moisture, chemicals, and other corrosive substances is a concern. The "X" signifies that the enclosure meets the highest level of corrosion resistance standards set by the National Electrical Manufacturers Association (NEMA). Stainless steel (SS) is often used in the construction of NEMA 4X enclosures due to its excellent corrosion resistance properties.Rate this question:
- 31.
The nearest equivalent to NEMA 4 in IP ratings is?
- A.
IP 54
- B.
IP 55
- C.
IP 65
- D.
IP 66
Correct Answer
D. IP 66Explanation
The correct answer is IP 66. NEMA 4 is a standard that specifies the degree of protection provided by an enclosure against the ingress of solid objects, dust, water, and other environmental factors. IP (Ingress Protection) ratings are a similar international standard that also indicate the level of protection against these factors. IP 66 is the closest equivalent to NEMA 4, as it offers a high level of protection against dust and water, making it suitable for outdoor and harsh environments. IP 54, IP 55, and IP 65 have lower levels of protection and are not equivalent to NEMA 4.Rate this question:
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- 32.
Algypug's enclosures meet which UL standard (two possible answers)?
Correct Answer
UL508
508A
508A
508
508
UL508A
UL508AExplanation
Algypug's enclosures meet two UL standards: UL508 and UL508A.Rate this question:
- 33.
It is not possible to CE certify bare enclosures.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
CE certification cannot occur on empty enclosures, as enclosures are inactive components of a final assembly.Rate this question:
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- 34.
Which of the following are factors affecting the quality of a powder coated finish?
- A.
Concentration of the pre-treatment chemicals
- B.
Temperature of the water baths
- C.
Length of time the items are kept in each bath
- D.
Quality of the powder used
- E.
Consistency of the operator in applying the powder
- F.
That the temperature of the oven doesn't exceed 250 degrees
Correct Answer(s)
A. Concentration of the pre-treatment chemicals
C. Length of time the items are kept in each bath
D. Quality of the powder used
E. Consistency of the operator in applying the powderExplanation
1) The temperature of the phosphating and degreasing tanks are the important, not the water baths.
2) It is important that the temperature of the oven is consistently maintained at 220 degrees, not that it doesn't exceed 220 degrees.Rate this question:
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- 35.
Which of the following are powder coating tests?
- A.
Thickness Test
- B.
Relief Test
- C.
Cross Hatch Adhesion Test
- D.
Salt Spray Test
Correct Answer(s)
A. Thickness Test
C. Cross Hatch Adhesion Test
D. Salt Spray TestExplanation
The given answer correctly identifies the powder coating tests. The Thickness Test is used to measure the thickness of the powder coating to ensure it meets the required specifications. The Cross Hatch Adhesion Test is performed to assess the adhesion strength of the coating by making cuts in a crosshatch pattern and checking for any coating detachment. The Salt Spray Test is conducted to evaluate the corrosion resistance of the coating by exposing it to a saltwater mist environment. These tests are essential in ensuring the quality and durability of powder coatings.Rate this question:
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- 36.
What is the number of salt spray hours a standard Algypug enclosure can undergo?
- A.
250
- B.
500
- C.
750
- D.
1000
- E.
2000
Correct Answer
B. 500Explanation
The number of salt spray hours that a standard Algypug enclosure can undergo is 500. This suggests that the enclosure has been tested and proven to withstand exposure to salt spray for a duration of 500 hours. This information is important for customers who may be considering purchasing the Algypug enclosure and need to know its durability in harsh environments.Rate this question:
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- 37.
Depending on the customer's application, Algypug can develop special powder coating systems that cater to longer salt spray hours and different applications.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Algypug has the capability to develop special powder coating systems based on the customer's application. These systems are designed to cater to longer salt spray hours and various applications. This suggests that Algypug has the expertise and flexibility to meet the specific needs of their customers, making the statement true.Rate this question:
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- 38.
The typical coating thickness of a standard enclosure is?
- A.
60-80 microns
- B.
70-90 microns
- C.
80-100 microns
- D.
100-120 microns
Correct Answer
C. 80-100 micronsExplanation
The typical coating thickness of a standard enclosure is 80-100 microns. This range is considered standard because it provides adequate protection against corrosion and other environmental factors. Coatings within this thickness range are able to effectively prevent moisture and other harmful substances from reaching the underlying material of the enclosure. Additionally, this thickness range allows for good adhesion and durability of the coating, ensuring its long-term effectiveness.Rate this question:
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- 39.
The powder coated item needs to be baked at what temperature for how long?
- A.
200 degrees, 15 minutes
- B.
220 degrees, 15 minutes
- C.
200 degrees, 20 minutes
- D.
220 degrees, 20 minutes
Correct Answer
D. 220 degrees, 20 minutesExplanation
The powder coated item needs to be baked at 220 degrees for 20 minutes. This is the correct answer because powder coating is a process in which a dry powder is applied to a surface and then heated to form a protective and decorative coating. The baking process helps the powder to melt and adhere to the surface, creating a durable finish. The temperature of 220 degrees and the duration of 20 minutes are necessary to ensure proper melting and curing of the powder coating.Rate this question:
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- 40.
Standard sheet metal tolerances are?
- A.
+/- 2mm over 2 meters
- B.
+/- 1mm over 1 meter
- C.
+/- 0.5mm over 1 meter
- D.
+/- 2mm over 1 meter
Correct Answer
D. +/- 2mm over 1 meterExplanation
Standard sheet metal tolerances are typically expressed as a range of acceptable deviation from the specified dimensions. In this case, the correct answer is "+/- 2mm over 1 meter". This means that the sheet metal can deviate by a maximum of 2mm in either direction (plus or minus) over a distance of 1 meter. This tolerance allows for slight variations in the manufacturing process and ensures that the final product remains within an acceptable range of dimensions.Rate this question:
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- 41.
For an enclosure of 1800mm height, the maximum and minimum allowable dimensions are?
- A.
1803.6, 1796.4
- B.
1802.6, 1797.4
- C.
1801.6, 1798.4
- D.
1800.6, 1799,4
Correct Answer
A. 1803.6, 1796.4Explanation
The maximum allowable dimension for the enclosure height is 1803.6mm, while the minimum allowable dimension is 1796.4mm.Rate this question:
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- 42.
For an enclosure of 500mm in height, the maximum and minimum allowable measured heights are?
- A.
502mm, 498mm
- B.
500.5mm, 499.5mm
- C.
501mm, 499mm
- D.
503mm, 497mm
Correct Answer
C. 501mm, 499mmExplanation
For an enclosure of 500mm in height, the maximum allowable measured height would be slightly above 500mm, which is 501mm. This allows for a small margin of error or tolerance. On the other hand, the minimum allowable measured height would be slightly below 500mm, which is 499mm. This ensures that the enclosure does not exceed the specified height limit and provides a margin of error on the lower end as well.Rate this question:
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- 43.
For an enclosure of 700mm in height, the maximum and minimum allowable measured widths are?
- A.
702mm, 698mm
- B.
700.5mm, 699.5mm
- C.
701mm, 699mm
- D.
Not possible to tell
Correct Answer
D. Not possible to tellExplanation
The question only gave the height, but you were asked for the max/min widths. How could you tell this from the information in the question?Rate this question:
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