Explain when a vacuum relief valve is to be installed on a water heater.
What will be an ideal response?
The purpose of the device is to activate and stop a vacuum when a tank is drained and siphoned. A vacuum relief valve allows air to enter and even out with atmospheric pressure, while a drained tank under a partial vacuum would allow external atmospheric pressure to damage the drained tank or burn out the elements (now dry).
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If cattle are to be marketed profitably, the producer must be aware of current prices and trends
Indicate whether the statement is true or false.
What is the purpose of a condenser?
What will be an ideal response?
Technician A says that when using DMM probes should be inserted through the rubber insulator of weatherproof connectors. Technician B says that a correct method of connecting a DMM into an active electronic circuit is to use a breakout box or Tee. Who is correct?
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B
Find the equivalent resistance between terminals a and b of the circuit shown below.
