Test Equipment Flashcards
When measuring voltage across a circuit with a multimeter, where should the probes be placed?
A) In series with the circuit
B) Across the load in parallel
C) Across the power supply
D) Directly on the resistor
B) Across the load in parallel
Which setting would you use on a multimeter to check if a fuse is good?
A) Voltage (AC)
B) Voltage (DC)
C) Ohms (resistance)
D) Current
C) Ohms (resistance)
What is the primary purpose of an oscilloscope in maintenance work?
A) To measure voltage in AC and DC circuits
B) To visualize electrical waveforms
C) To check for continuity in a circuit
D) To measure resistance
B) To visualize electrical waveforms
When using an oscilloscope, what would be the likely indication of a malfunctioning capacitor in a waveform?
A) An increase in amplitude
B) A phase shift
C) A flat-line (no waveform)
D) A square waveform
C) A flat-line (no waveform)
What is a megohmmeter (megger) used for in electrical testing?
A) Measuring small resistances
B) Checking insulation resistance
C) Measuring current
D) Checking voltage drop
B) Checking insulation resistance
To test insulation resistance with a megohmmeter, what is the typical procedure?
A) Connect the device across a live circuit
B) Connect the device between the conductor and ground
C) Measure the resistance between two energized points
D) Measure the capacitance across a circuit
B) Connect the device between the conductor and ground
What is the primary function of a clamp meter?
A) To measure voltage
B) To measure resistance
C) To measure current without breaking the circuit
D) To measure capacitance
C) To measure current without breaking the circuit
When using a clamp meter to measure current, what must you do to ensure an accurate reading?
A) Clamp around both the live and neutral wires
B) Clamp around only the live wire
C) Clamp around the earth wire
D) Disconnect the power before clamping
B) Clamp around only the live wire
What does a continuity tester measure in a circuit?
A) Voltage
B) Current
C) Resistance
D) Whether a circuit is open or closed
D) Whether a circuit is open or closed
What would be the expected reading or result on a continuity tester if the circuit is open?
A) Low resistance reading
B) High resistance reading
C) A beep or light indicating continuity
D) No reading, no beep, or no light
D) No reading, no beep, or no light
A pressure gauge is used to measure:
A) Electrical resistance
B) Hydraulic pressure
C) Fluid flow rate
D) Temperature
B) Hydraulic pressure
When using a flow meter, what is it used to measure?
A) Voltage in a hydraulic system
B) The rate at which fluid moves through a system
C) The pressure of gas in a pipe
D) The temperature of fluids
B) The rate at which fluid moves through a system
What is the purpose of using a thermocouple in industrial maintenance?
A) To measure electrical resistance
B) To measure temperature
C) To check for current leakage
D) To check for continuity in wires
B) To measure temperature
What is the advantage of using an infrared thermometer over a traditional contact thermometer?
A) It can measure voltage
B) It provides a continuous reading
C) It allows you to measure temperature from a distance
D) It measures the resistance in a circuit
C) It allows you to measure temperature from a distance
What is the main difference between a digital and an analog multimeter?
A) Digital meters display readings with a needle, while analog meters display readings as numbers.
B) Analog meters are more accurate than digital meters.
C) Digital meters display readings as numbers, while analog meters use a needle and dial to display readings.
D) Analog meters require a battery to operate, while digital meters do not.
C) Digital meters display readings as numbers, while analog meters use a needle and dial to display readings.