TPC Batteries and DC Circuits exam questions with answers

TPC Batteries and DC Circuits exam
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questions with answers |\ |\




In a simple electrical device, if you double the potential
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difference, the ____________ doubles. - CORRECT |\ |\ |\ |\ |\ |\



ANSWERS ✔✔current |\




If a potential difference of 200 V is applied across the field
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windings of a motor and the current drawn by
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the windings is 15 A, how much power is consumed by
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the windings? - CORRECT ANSWERS ✔✔3.0 kW
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If you move a 40 lb object 8 ft into the air and put it on a
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mezzanine, how much work do you do? - CORRECT |\ |\ |\ |\ |\ |\ |\ |\ |\



ANSWERS ✔✔320 ft-lb |\ |\




Which of the following is a formula for calculating the
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efficiency of electrical equipment? - CORRECT ANSWERS
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✔✔ExI(out) / ExI(in) |\ |\




If a motor can lift a 300 lb weight 15 ft in 10 seconds, how
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much power does the motor deliver? - CORRECT
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ANSWERS ✔✔450 ft-lb/second |\ |\

, A shunt motor circuit in its simplest form is a dc
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____________ circuit. - CORRECT ANSWERS ✔✔parallel |\ |\ |\ |\ |\




A SPDT switch is considered a ____________ switch. -
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CORRECT ANSWERS ✔✔three-way |\ |\




In every generator, the armature and field windings have
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a(n) - CORRECT ANSWERS ✔✔internal resistance
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Tapped and sliding-contact resistors are commonly used
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as voltage - CORRECT ANSWERS ✔✔dividers
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Adding resistors in series with the armature windings of a
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dc series motor will cause it to - CORRECT ANSWERS
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✔✔slow down |\




When calculating resistance, divide complex circuits into
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simpler parts beginning with the - CORRECT ANSWERS
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✔✔smallest combination |\




Redrawing and ____________ series-parallel circuits are |\ |\ |\ |\ |\ |\



ways of simplifying the circuit and making sure
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that no components are missed. - CORRECT ANSWERS
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✔✔tracing