Trade & Technology Expert Q&A
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PP
palak popli
about 18 hours ago
In a clothes dryer, the greatest static charges generally are built up on _____ fabrics.
A) man-made
B) natural
A) man-made
B) natural
ZA
Zozan Abdullah
about 18 hours ago
The north pole of a compass needle points in the direction of the south geographic pole.
KC
Kaitlyn Carter
about 20 hours ago
In order to increase the efficiency of the cooling, some alternators operate in a(n) _____ atmosphere.
A) helium
B) oxygen
C) hydrogen
D) nitrogen
A) helium
B) oxygen
C) hydrogen
D) nitrogen
NY
nana yaw Ansah Antwi
about 20 hours ago
Most lightning discharges associated with a cloud occur between the cloud and the ground.
PA
Prime alex1027
about 20 hours ago
The frequency of the current in a squirrel-cage rotor _____ as the rotor approaches synchronous speed.
A) increases
B) stays the same
C) decreases
D) is cut in half
A) increases
B) stays the same
C) decreases
D) is cut in half
ZW
ZHANG WENQI
about 21 hours ago
A transformer in which the secondary voltage is more than the primary voltage is called a(n) _____ transformer.
A) step-down
B) step-up
C) isolation
D) auto
A) step-down
B) step-up
C) isolation
D) auto
MS
Magnus Sherpa
about 21 hours ago
In a generator, the _____ permits part of the current that normally flows through the series field to flow through the resistor.
A) series field shunt rheostat
B) shunt field series rheostat
C) series field exciter
D) shunt field exciter
A) series field shunt rheostat
B) shunt field series rheostat
C) series field exciter
D) shunt field exciter
RC
Robert Cabrera
about 21 hours ago
Armatures are wound to provide high voltage, high current, or some specific combination of voltage and current. Which type of winding provides low voltage and high current?
A) frogleg-wound
B) lap-wound
C) wave-wound
A) frogleg-wound
B) lap-wound
C) wave-wound
CM
Cassey Moresco
about 23 hours ago
Three capacitors, a 12 μ F, a 20 μ F and a 30 μ F, are connected in parallel. What is the total capacitance?
A) 6 μ F
B) 62 μ F
A) 6 μ F
B) 62 μ F
LS
Lilian Serrano
about 24 hours ago
Filters designed to reject low frequencies are _____ filters.
A) low-pass
B) high-pass
C) bandpass
D) band-rejection
A) low-pass
B) high-pass
C) bandpass
D) band-rejection
VD
Venessa Doherty
about 24 hours ago
Of the different power values in an RC circuit, which is known as apparent power?
A) VA
B) W
C) VARs
A) VA
B) W
C) VARs
NC
Negatory Circumstance
1 day ago
A right triangle has two sides that are 9 inches and 12 inches. How long is the hypotenuse?
A) 3 inches
B) 7 inches
C) 15 inches
D) 21 inches
A) 3 inches
B) 7 inches
C) 15 inches
D) 21 inches
AM
Arghir Mircea
1 day ago
A series RL circuit has a resistance of 270 Ω and an inductive reactance of 155 Ω . How many degrees is angle theta ( ∠θ ) ?
A) 4.97 °
B) 5.03 °
C) 10.14 °
D) 29.86 °
A) 4.97 °
B) 5.03 °
C) 10.14 °
D) 29.86 °
Has Verified Answer
UM
Umair Malik
1 day ago
A right triangle has one side of 5 and another side of 4 (neither side is the hypotenuse) . What is the angle adjacent to the side that is 5?
A) 10.87°
B) 15.34°
C) 18.13°
D) 38.66°
A) 10.87°
B) 15.34°
C) 18.13°
D) 38.66°
KE
Kamren Ebanks
1 day ago
A coil has an inductance of 3 H and a wire resistance of 15 Ω . How long will it take for the current to reach its full value?
A) 45 seconds
B) 0.2 seconds
C) 1.0 seconds
D) 25 seconds
A) 45 seconds
B) 0.2 seconds
C) 1.0 seconds
D) 25 seconds
Has Verified Answer
TE
Tarek Elshafey
1 day ago
During the period of time known as the first time constant of an exponential curve, the current will rise to about _____ percent of its full value.
A) 50
B) 31.8
C) 100
D) 63.2
A) 50
B) 31.8
C) 100
D) 63.2
MB
Martha Benjamin
1 day ago
An induced voltage opposes the motion that causes it according to _____.
A) Ohm's law
B) Lenz's law
C) Coulomb's theory
D) Fleming's rule
A) Ohm's law
B) Lenz's law
C) Coulomb's theory
D) Fleming's rule
Has Verified Answer