Stationary Engineer Electric Pre Test Questions And Answers
Stationary Engineer Electric Pre Test Questions And Answers 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 The power factor of a load is equal to the ____________ power divided by the ____________ power. - ANSWER : True ; apparent 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 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 A certain 120-volts single-phase AC circuit has a power factor of 80 percent and a wattmeter reading of 1150 watts. The current drawn by the circuit is _________ amperes. - ANSWER : 12 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 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 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 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
Written for
- Institution
- Stationary Engineer
- Module
- Stationary Engineer
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- Uploaded on
- March 24, 2024
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- Written in
- 2023/2024
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- Questions & answers
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stationary engineer
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electricity
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electric engineer
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stationary engineer electric pre test questions a
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