Free CIC Practice Questions

Question 1

During commissioning, a contractor finds wet corners and dry interior areas on a rotor zone. The rotors have equal throw distances and identical fixed-flow nozzles, but operate at quarter-circle, half-circle, and full-circle arcs. Spacing and operating pressure match the design. What correction addresses the uneven application at its source?

Accepted Answer

Fit nozzles with flows matched to each arc while preserving the required throw.

Answer

Shorten the entire zone's runtime until the corner areas stop becoming saturated.

Answer

Throttle the corner rotors with their radius screws while retaining the installed nozzles.

Answer

Increase the zone's operating pressure so the full-circle rotors reach farther into the interior.

Question 2

Three adjacent stations on a conventional 24-VAC system stop opening electrically; the remaining stations operate normally. Each affected valve opens manually, and each isolated, deenergized solenoid tests within its specified resistance range. With field wires disconnected, a known-good test solenoid operates at each affected controller output. The three field valves share one common-wire splice. After deenergizing the system, where should the technician concentrate the next continuity check?

Accepted Answer

The shared common-wire path serving the three affected valves.

Answer

The controller transformer's secondary winding.

Answer

The three valve solenoid windings.

Answer

The internal controller wiring ahead of the three tested station outputs.

Question 3

The point of connection measures 78 psi with no flow and 64 psi while supplying the proposed zone's 20 gpm. At that flow, the combined backflow, valve, and piping losses to the highest sprinkler are 12 psi. That sprinkler is 20 vertical feet above the pressure measurement point and requires at least 40 psi. Using 0.433 psi per foot of elevation rise, which pressure-budget conclusion is correct?

Accepted Answer

About 43.3 psi reaches the sprinkler; the pressure requirement is met.

Answer

About 34.7 psi reaches the sprinkler; the pressure requirement is not met.

Answer

About 52.0 psi reaches the sprinkler; the pressure requirement is met.

Answer

About 57.3 psi reaches the sprinkler; the pressure requirement is met.

Question 4

A properly conducted catch-can audit reports a low-quarter distribution uniformity (DUlq) of 0.52. Soil probing confirms dry areas alongside areas already near field capacity. The owner proposes increasing every runtime until the dry areas recover. Which interpretation should guide the contractor's response?

Accepted Answer

The lowest quarter averages 52% of the overall catch; correct distribution defects before extending runtime.

Answer

The system loses 48% of applied water to evaporation, so irrigation should be moved to nighttime.

Answer

Exactly 52% of the irrigated area receives enough water, so only the remaining area needs inspection.

Answer

The entire root zone is 52% depleted, so a longer runtime is needed to restore its water storage.

Question 5

An irrigation connection includes fertilizer injection and a downstream booster pump capable of producing pressure above the potable supply pressure. The water authority classifies the connection as a health hazard. A direct, continuously pressurized connection is to be retained. Which assembly has the required protection capabilities, subject to local approval?

Accepted Answer

A reduced-pressure-principle assembly.

Answer

A pressure vacuum breaker assembly.

Answer

A testable double-check valve assembly.

Answer

An atmospheric vacuum breaker assembly.

Question 6

The current issued-for-construction plan routes a mainline through a marked tree-protection area. A note on the same sheet prohibits excavation inside that area. The contract requires designer approval of routing changes. Independent work elsewhere is fully approved and unaffected. What direction best protects the project requirements without creating unnecessary delay?

Accepted Answer

Continue unaffected work; hold the conflicting excavation and submit an RFI.

Answer

Suspend the entire job until revised drawings arrive.

Answer

Reroute the mainline outside the fence and document the change on the as-built plan.

Answer

Use the previous drawing's route because it avoids the tree-protection area.

Question 7

Site observations show that sunny turf needs irrigation more frequently than an adjacent shaded shrub bed, whose soil remains wet between turf cycles. The two areas currently share a valve. Even if their application rates are adjusted, their required watering intervals remain different. Which redesign resolves that scheduling conflict?

Accepted Answer

Put the two areas on separately scheduled valves.

Answer

Keep one valve and reduce the shrub emitters' discharge rates.

Answer

Retain one valve; add weather-based control.

Answer

Keep one valve and move its soil-moisture sensor into the shrub bed.

Question 8

A turf zone starts the week at field capacity. Weekly reference ET is 0.90 inch, and the landscape coefficient is 0.60. Of 0.30 inch of measured rain, 0.18 inch is retained as effective rainfall. Use 75% application efficiency and a measured precipitation rate of 1.20 inches/hour. The soil can store the required refill, but runoff begins after 10 continuous minutes; field testing confirms that 20-minute soak intervals prevent runoff between shorter cycles. Use net depth = ET x coefficient - effective rain, gross depth = net depth / efficiency, and runtime = 60 x gross depth / precipitation rate. Which end-of-week program supplies the required refill without runoff?

Accepted Answer

Three 8-minute cycles with 20-minute soak intervals.

Answer

One 24-minute cycle with no soak interval.

Answer

Three 6-minute cycles with 20-minute soak intervals.

Answer

Six 6-minute cycles with 20-minute soak intervals.

Question 9

After a hillside zone shuts off, its lowest sprinkler releases water for about two minutes, then stops. With the supply still open, no further water appears during a 30-minute observation. The same brief discharge follows every normal cycle and leaves a puddle beside a walkway. Which recommendation fits these findings?

Accepted Answer

Use a check-equipped sprinkler rated to hold back the elevation head at that location.

Answer

Keep the irrigation supply closed until the zone valve has been rebuilt and retested.

Answer

Replace the valve solenoid because it is continuing to hold the zone open after shutdown.

Answer

Install a pressure regulator at the zone inlet.

Question 10

A new pressure-compensating drip zone has an operating flow of 0.8 gpm. Its installed control valve is rated for 2-40 gpm. The regulator is rated for 0.2-5 gpm and supplies 25 psi, within the emitters' specified 15-35 psi range. Filtration meets the emitter requirement. Which change corrects the component mismatch?

Accepted Answer

Install a compatible control valve rated for 0.1-5 gpm.

Answer

Partially close the installed valve's flow-control stem to adapt it to the lower flow.

Answer

Raise the regulator setting to 35 psi.

Answer

Add a downstream check valve to keep the drip tubing full between watering cycles.

Free CIC Practice Questions

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Question 1

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Domain 2: Surveillance and Epidemiologic Investigation

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Question 5

Domain 3: Preventing and Controlling the Transmission of Infectious Agents

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Domain 4: Cleaning Disinfection and Sterilization

Question 8

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Domain 5: Management and Communication

Question 10

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