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A sample exam for DC/AC I, unit # 12 is presented to the students. This unit covers transformers.
Pneumatic FRL Units
By Terry Bartelt
Learners examine a Filter-Regulator-Lubricator (FRL) unit that is used to prepare the air in a pneumatic system.
Transistor Fundamentals: E-MOSFETs, the Ohmic Region
By Patrick Hoppe
The ohmic region of the E-MOSFET is identified. Formulas are given to determine the proper operation in the ohmic region. An example of circuit analysis is also given.
The Duty Cycle of a Multivibrator
In this interactive and animated object, learners examine the duty cycle of a squarewave produced by a multivibrator using a 555 IC (integrated circuit). A brief quiz completes the activity.
PLC Sourcing Input Modules
In this interactive and animated object, learners study how to wire field devices to a PLC sourcing input module. A brief quiz completes the activity.
The Reflected Load in a Transformer
Learners examine how the load resistance connected to the secondary coil of a transformer affects the primary current. A brief quiz completes the activity.
Transformer Action Demonstration
Learners view animations and video clips showing how power is transmitted from one energized coil to another.
DC/AC I: Unit 8 Sample Exam
Students answer five questions concerning magnetism.
DC/AC I: Unit 9 Sample Exam
In this interactive object, learners answer nine questions about inductors.
DC/AC I: Unit 10 Sample Exam
Learners answer eight questions about capacitors. Help pages are available.
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