DC THIRD CLASS STATIONARY BOILER
EXAMINATION TEST 2026 FULL SOLUTION SET
GUARANTEED PASS
◉ The thermal efficiency of a boiler with a stack temperature of 750°F
and and a furnace temperature of 3200°F is_______? Answer: 75%
◉ How many inches of steam space in a cylinder of an engine 12"x28"
and the stroke is 5/8 of its full travel? Answer: 1978
◉ What is the horsepower requirement of a pump that moves 2500 gpm
of water against a head of 475' if the pump is operating at 58%
efficiency? Answer: 516.8 HP
◉ How many horsepower are required to raise 3500 pounds to a height
of 175 feet at 60% efficiency? Answer: 31
◉ A fuel tank contains 330,000 gallons of #4 fuel oil at 80°F. How many
gallons would it read if the temperature was raised to 95°F? Coefficient
of expansion is .000345. Answer: 331,708
◉ A 300 HP motor is running at 1800 RPM and is at full load. The
torque on the shaft of the motor is_______. Answer: 875 Tq
EXAMINATION TEST 2026 FULL SOLUTION SET
GUARANTEED PASS
◉ The thermal efficiency of a boiler with a stack temperature of 750°F
and and a furnace temperature of 3200°F is_______? Answer: 75%
◉ How many inches of steam space in a cylinder of an engine 12"x28"
and the stroke is 5/8 of its full travel? Answer: 1978
◉ What is the horsepower requirement of a pump that moves 2500 gpm
of water against a head of 475' if the pump is operating at 58%
efficiency? Answer: 516.8 HP
◉ How many horsepower are required to raise 3500 pounds to a height
of 175 feet at 60% efficiency? Answer: 31
◉ A fuel tank contains 330,000 gallons of #4 fuel oil at 80°F. How many
gallons would it read if the temperature was raised to 95°F? Coefficient
of expansion is .000345. Answer: 331,708
◉ A 300 HP motor is running at 1800 RPM and is at full load. The
torque on the shaft of the motor is_______. Answer: 875 Tq
