Stationary Engineer Electric CERTIFICATION
TEST STUDY GUIDE 2025/2026 QUESTIONS BANK
AND VERIFIED CORRECT SOLUTIONS WITH
RATIONALES || 100% GUARANTEED PASS
<RECENT VERSION>
1. An AC circuit consists only of a pure inductance and a power source. The
relationship between the voltage and the current in this circuit is that the -
ANSWER ✓ current lags the voltage
2. The power factor of a load is equal to the ____________ power divided by
the ____________ power. - ANSWER ✓ True ; apparent
3. A 10-ohms and 20-ohms resistor are connected in parallel. The total line
current drawn by this parallel combination is 30 amps. Under these
conditions, the line voltage will be ____________ volts. - ANSWER ✓ 200
4. A 20-ohm resistor is connected in series with a parallel combination of two
resistors, one of which is 10-ohms, the other 40-ohms. If the voltage across
the parallel combination is 40 volts, the voltage across the 20-ohm series
resistor is ________ volts. - ANSWER ✓ 100
5. A certain 120-volts single-phase AC circuit has a power factor of 80 percent
and a watt-meter reading of 1150 watts. The current drawn by the circuit is
_________ amperes. - ANSWER ✓ 12
6. If the voltage between lines of a 3-phase, 3-wire delta connected system is
2400 volts, then the phase voltage is _____________ volts - ANSWER ✓
2400
7. A circuit consists of an inductive reactance of 15 ohms and a resistor of 20
ohms in series across a 100-volts, 60 cycles AC supply. The current in this
circuit is ____________ amperes. - ANSWER ✓ 4
,8. A 3 phase, 3 wire, 208 volt, 60 cycles AC service supplies a balanced load
consisting of three 30 ohms resistors connected wye. The line current under
these conditions os MOST NEARLY ___________ amperes. - ANSWER ✓
6.9
9. If the level of the electrolyte in a lead acid storage battery falls below the top
of the plates because of evaporations under normal operating conditions, it is
BEST to add - ANSWER ✓ Water
10.A 600 volt cartridge fuse must have knife blade contacts if its current rating
exceeds _____________ amperes. - ANSWER ✓ 60
11.When the magnitude of the short circuit currents in a feeder circuit must be
limited, this is USUALLY accomplished by means of - ANSWER ✓
reactors
12.The cross sectional area in circular mils of a standard cable having 37
strands, each of which ha a diameter of 90 nils, is MOST NEARLY -
ANSWER ✓ 300,000
13.A coil having an average diameter of 4 inches is to be made up from a 1,260
ft long length of wire. The numbers of turns in this coil will be MOST
NEARLY - ANSWER ✓ 1,200
14.mayoral order 16 protects against? - ANSWER ✓ All employees are
required to report against, corruption, fraudulent activity, unethical conduct,
criminal activity, conflict of interest and report directly to the office of
inspector general.
15.In a power source. The relation between voltage and current is that the? -
ANSWER ✓ Current lags the voltage.
16.The power factor of a load is equal to? - ANSWER ✓ True power divided
by apparent power.
,17.A 10ohm and 20ohm resistor are connected in parallel. The total line current
drawn by this parallel combination is 30 amps. Under these conditions the
line voltage will be - ANSWER ✓ 200 volts
18.A 20 ohm resistor is connected in series with a parallel combination of two
resistors, one of which is 10 ohms, the other 40 ohms. If the voltage across
the parallel combination is 40 volts, the voltage across the 20 ohm series
resistor is? - ANSWER ✓ 100 volts
19.A certain 120 volt single phase A.C circuit has a power factor of 80 percent
and a wattmeter reading of 1150 watts. The current drawn by circuit most
nearly. - ANSWER ✓ 12 amps ( 1150/120*.8= 1150/96=11.97 amps)
20.If the voltage between lines of a 3-phase, 3 wire delta connected system is
2400 volts, then the phase voltage is? - ANSWER ✓ 2400 voltage. In a delta
configuration the volts lead to lead are the same. In a wye configuration the
the voltage can change from neutral to lead.
21.A circuit consists of an inductive reactance of 15 ohms and a resistor of 20
ohms in series across a 100 volts, 60 A.C supply. The current in this circuit
is? - ANSWER ✓ 4 amps
22.The device commonly known as a growler is FREQUENTLY used to -
ANSWER ✓ test DC armature windings for shorts
23.When a megger is applied alternately to the two leads of a direct current
electrolytic capacitor, the reading will - ANSWER ✓ start at zero but
increase gradually for one of the connections
24.On a working drawing, the symbol (shading) given as shown at the right
represents - ANSWER ✓ steel
25.A machine screw is indicated on a drawing as The head is the American
Standard type called ___________ head. - ANSWER ✓ oval
26.The tool that is shown at the right is properly referred to as a(n)
___________ tap. - ANSWER ✓ bottoming
, 27.The tool indicated at the right is referred to as an arch punch. This tool
should be used to - ANSWER ✓ make the holes in rubber or leather gasket
material
28.Before putting an aerosol container for garbage pickup, it is good practice to
- ANSWER ✓ use out the contents inn normal manner
29.A lantern ring is a type of - ANSWER ✓ sealing arrangement used to
minimize air leakage between a rotating shaft and a sleeve
30.Monel metal is an alloy used for water heaters tanks. It is a combination
MAINLY of - ANSWER ✓ nickel and copper
31.The plumbing fitting shown at the right is called - ANSWER ✓ Return Bend
32.A galvanized steel plate is a plate with a coating of - ANSWER ✓ zinc
33.If the barrel of a standard micrometer is rotated through one complete
revolution, the gap dimensions is charged by ______________ inch. -
ANSWER ✓ .025
34.Of the following, the indication that a fluorescent lamp is in need of
replacement is that - ANSWER ✓ the lamp flashes on and off, and there are
black coating at the end
35.The one of the following that is recommended for prime-coating bare metal
is - ANSWER ✓ zinc chromate
36.Dressing a grinding wheel refers to - ANSWER ✓ cleaning the grinding
surface and making the wheel rounds
37.A fusible metal plug is a protective device that - ANSWER ✓ melts when its
temperature reaches a specific figure
38.Of the following, the material that is beginning to used for electrical conduit,
plastic water pipes, and electrician insulation is - ANSWER ✓
polyvinylchloride
TEST STUDY GUIDE 2025/2026 QUESTIONS BANK
AND VERIFIED CORRECT SOLUTIONS WITH
RATIONALES || 100% GUARANTEED PASS
<RECENT VERSION>
1. An AC circuit consists only of a pure inductance and a power source. The
relationship between the voltage and the current in this circuit is that the -
ANSWER ✓ current lags the voltage
2. The power factor of a load is equal to the ____________ power divided by
the ____________ power. - ANSWER ✓ True ; apparent
3. A 10-ohms and 20-ohms resistor are connected in parallel. The total line
current drawn by this parallel combination is 30 amps. Under these
conditions, the line voltage will be ____________ volts. - ANSWER ✓ 200
4. A 20-ohm resistor is connected in series with a parallel combination of two
resistors, one of which is 10-ohms, the other 40-ohms. If the voltage across
the parallel combination is 40 volts, the voltage across the 20-ohm series
resistor is ________ volts. - ANSWER ✓ 100
5. A certain 120-volts single-phase AC circuit has a power factor of 80 percent
and a watt-meter reading of 1150 watts. The current drawn by the circuit is
_________ amperes. - ANSWER ✓ 12
6. If the voltage between lines of a 3-phase, 3-wire delta connected system is
2400 volts, then the phase voltage is _____________ volts - ANSWER ✓
2400
7. A circuit consists of an inductive reactance of 15 ohms and a resistor of 20
ohms in series across a 100-volts, 60 cycles AC supply. The current in this
circuit is ____________ amperes. - ANSWER ✓ 4
,8. A 3 phase, 3 wire, 208 volt, 60 cycles AC service supplies a balanced load
consisting of three 30 ohms resistors connected wye. The line current under
these conditions os MOST NEARLY ___________ amperes. - ANSWER ✓
6.9
9. If the level of the electrolyte in a lead acid storage battery falls below the top
of the plates because of evaporations under normal operating conditions, it is
BEST to add - ANSWER ✓ Water
10.A 600 volt cartridge fuse must have knife blade contacts if its current rating
exceeds _____________ amperes. - ANSWER ✓ 60
11.When the magnitude of the short circuit currents in a feeder circuit must be
limited, this is USUALLY accomplished by means of - ANSWER ✓
reactors
12.The cross sectional area in circular mils of a standard cable having 37
strands, each of which ha a diameter of 90 nils, is MOST NEARLY -
ANSWER ✓ 300,000
13.A coil having an average diameter of 4 inches is to be made up from a 1,260
ft long length of wire. The numbers of turns in this coil will be MOST
NEARLY - ANSWER ✓ 1,200
14.mayoral order 16 protects against? - ANSWER ✓ All employees are
required to report against, corruption, fraudulent activity, unethical conduct,
criminal activity, conflict of interest and report directly to the office of
inspector general.
15.In a power source. The relation between voltage and current is that the? -
ANSWER ✓ Current lags the voltage.
16.The power factor of a load is equal to? - ANSWER ✓ True power divided
by apparent power.
,17.A 10ohm and 20ohm resistor are connected in parallel. The total line current
drawn by this parallel combination is 30 amps. Under these conditions the
line voltage will be - ANSWER ✓ 200 volts
18.A 20 ohm resistor is connected in series with a parallel combination of two
resistors, one of which is 10 ohms, the other 40 ohms. If the voltage across
the parallel combination is 40 volts, the voltage across the 20 ohm series
resistor is? - ANSWER ✓ 100 volts
19.A certain 120 volt single phase A.C circuit has a power factor of 80 percent
and a wattmeter reading of 1150 watts. The current drawn by circuit most
nearly. - ANSWER ✓ 12 amps ( 1150/120*.8= 1150/96=11.97 amps)
20.If the voltage between lines of a 3-phase, 3 wire delta connected system is
2400 volts, then the phase voltage is? - ANSWER ✓ 2400 voltage. In a delta
configuration the volts lead to lead are the same. In a wye configuration the
the voltage can change from neutral to lead.
21.A circuit consists of an inductive reactance of 15 ohms and a resistor of 20
ohms in series across a 100 volts, 60 A.C supply. The current in this circuit
is? - ANSWER ✓ 4 amps
22.The device commonly known as a growler is FREQUENTLY used to -
ANSWER ✓ test DC armature windings for shorts
23.When a megger is applied alternately to the two leads of a direct current
electrolytic capacitor, the reading will - ANSWER ✓ start at zero but
increase gradually for one of the connections
24.On a working drawing, the symbol (shading) given as shown at the right
represents - ANSWER ✓ steel
25.A machine screw is indicated on a drawing as The head is the American
Standard type called ___________ head. - ANSWER ✓ oval
26.The tool that is shown at the right is properly referred to as a(n)
___________ tap. - ANSWER ✓ bottoming
, 27.The tool indicated at the right is referred to as an arch punch. This tool
should be used to - ANSWER ✓ make the holes in rubber or leather gasket
material
28.Before putting an aerosol container for garbage pickup, it is good practice to
- ANSWER ✓ use out the contents inn normal manner
29.A lantern ring is a type of - ANSWER ✓ sealing arrangement used to
minimize air leakage between a rotating shaft and a sleeve
30.Monel metal is an alloy used for water heaters tanks. It is a combination
MAINLY of - ANSWER ✓ nickel and copper
31.The plumbing fitting shown at the right is called - ANSWER ✓ Return Bend
32.A galvanized steel plate is a plate with a coating of - ANSWER ✓ zinc
33.If the barrel of a standard micrometer is rotated through one complete
revolution, the gap dimensions is charged by ______________ inch. -
ANSWER ✓ .025
34.Of the following, the indication that a fluorescent lamp is in need of
replacement is that - ANSWER ✓ the lamp flashes on and off, and there are
black coating at the end
35.The one of the following that is recommended for prime-coating bare metal
is - ANSWER ✓ zinc chromate
36.Dressing a grinding wheel refers to - ANSWER ✓ cleaning the grinding
surface and making the wheel rounds
37.A fusible metal plug is a protective device that - ANSWER ✓ melts when its
temperature reaches a specific figure
38.Of the following, the material that is beginning to used for electrical conduit,
plastic water pipes, and electrician insulation is - ANSWER ✓
polyvinylchloride
