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CDFA Exam Preparation: Complete Guide with 260 Verified Questions & Answers (2026/2027)

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Ace the CDFA Weights and Measures Exam with this complete guide featuring 260 actual questions and detailed answers. Designed for Service Agent or Sealer candidates, this resource covers NIST Handbook 44, CCR Title 4, and B&P Code. Master liquid metering, LPG systems, vehicle tank meters, electric watt-hour meters, testing procedures, tolerances, Ohm's Law, and Blondel's Theorem. Learn practical skills: placing devices in service, using ID tags, handling red tags, and notifying county sealers. Understand evidence rules, search and seizure, penalties, and official powers. Perfect for new candidates and recertification. Organized for efficient study and exam success

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CDFA
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CDFA

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1 of 22


CDFA EXAM LATEST ACTUAL EXAM /CDFA EXAM PREPARATION
2026/2027 COMPLETE 260 QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+.
Handbook 44 refers to? - Correct Answers - Specifications and tolerances for commercial
weighing and measuring devices

Sealer when used without qualifications refers to: - Correct Answers - State sealer

An unapproved device should be labeled with: - Correct Answers - A yellow tag that says
"unapproved device"

A circuit breaker or fuse which establishes and limits automatically the maximum current
that can be conducted in a circuit is: - Correct Answers - Thermal overload protector

All equipment and all mechanisms and devices attached thereto or used in conjunction
with shall be so constructed, assembled or installed for use such that: - Correct Answers -
They do not facilitate fraud

In Handbook 44, the prefix "T" means: - Correct Answers - Tolerances

In Handbook 44, know what the Prefix stands for: - Correct Answers - T - Tolerances A -
Application S - Specifications N - Notes UR - User Requirements G - General

Requirements relating to installation of a device usually has the prefix: - Correct Answers -
UR (User Requirement)

Animal Scales: - Correct Answers - Used to measure single heads of animals

SR (definition): - Correct Answers - Vehicle Scale (digital) 12.5 shift -LD SR - 1 Dv - Indicator
- Weigh beam - 2d or 2% whichever is less

Shift Test (Definition) - Correct Answers - Weighing performance based on off-center
loading (1/2 cap)

A metering system in which the discharge line is always filled with liquid product is referred
to as? - Correct Answers - wet Hose Type

,2 of 22


Should auxiliary indications and money value indications be identical? - Correct Answers -
Yes (Showed exact amount or within $0.01 of Primary indicating Element)

Whenever a commercial weighing and measuring device is repaired, any adjustments shall
be made to bring performance errors to: - Correct Answers - As close as practicable to zero
value

Each Service Agency shall notify the county sealer of the repair, adjusting, or placing into
service of any commercial weighing and measuring device. The notice shall be: - Correct
Answers - In writing and transmitted to the sealer within 24 hours

In the absence of supporting data, a Service Agency's standards shall be certified at least
every: - Correct Answers - 2 years

If a county sealer intends to suspend the registration of a Service Agency, a copy of the
proposed action to the Service Agency shall be immediately forwarded to the: - Correct
Answers - Division of Measurement Standards

A Service Agent's identification adhesive tag or label shall show: - Correct Answers - The
name, registration number, business telephone number of the Service Agency, license
number of the Service Agent performing the work, and the date

A service agent's license is valid for: - Correct Answers - 5 years

It is illegal to remove a sealer "out of order" tag except if you: - Correct Answers - Are a
licensed Service Agent

The term "retroactive" more nearly means requirements that: - Correct Answers - Apply to
all devices

"Correct" means weight or measure or weighing, measuring or counting instruments
which: - Correct Answers - Meets all tolerances and specification requirements
established by regulations of the Secretary (Director) of Food and Agriculture

A device that meets all performance requirements but does not meet all specification
requirements is said to be: - Correct Answers - Incorrect

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A licensed Service Agent has the authority to remove an out-of-order notice (red tag). -
Correct Answers - True

Where there is a conflict between the General Code and a specific code in the California
Code of Regulations, Title 4, the General Code takes precedence. - Correct Answers -
False

The term "type approval" when applied to a weighing or measuring device means the
device: - Correct Answers - Is of a type or design that has been issued a certificate of
approval by the Department of Food and Agriculture

Tolerances for commercial weighing and measuring devices are: - Correct Answers -
Performance requirements

A system of indications or recording in which values are presented as a series of
graduations in combination with an indicator is: - Correct Answers - An analogue type

A Service agent is working on a device that has been placed "out-of-order" by a sealer (red
tagged). The agent cannot correct the device because parts need to be ordered. The
Service agent should: - Correct Answers - Replace the "out-of-order" notice on the device

The following are extracts from the General Code in Section 4000 of the California Code of
Regulations. Which of them is a "user requirement"? - Correct Answers - Equipment shall
be suitable for the environment in which it is used, including but not limited to the effects
of wind, weather, and RFI.

If several commercial devices are placed in service in adjoining counties on the same day,
a placed in-service notice must be sent to: - Correct Answers - Each county sealer
separately

In a commercial location with numerous new devices involved, it would satisfy the law if
the required Service Agency identification were placed on: - Correct Answers - Must be
placed on each device

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