1. A brake coil has a normal resistance of 50 ohms and operates at a hundred twenty five
volts. What's the cutting-edge? - ANS-2.5 amps
2. a circuit with parallel branches has 2 hundred ohms in one branch and three hundred
ohms within the different, what's the whole resistance? - ANS-1200 ohms
3. a resistor of what electricity score inclusive of a protection aspect might be had to update
a resistor in a circuit running with a 125v voltage drop and 1 amp of contemporary? -
ANS-250 w
4. circuit breakers and fuses are rated for which of the following? - ANS-voltage,
modern-day and time put off
5. if a circuit that has a 5 amp fuse and a generally contains 2 amps was to brief, inflicting
the current to double, what might show up to the fuse? - ANS-the fuse could keep the
weight
6. the bands from left to proper on a resistor indicate the numbers five,4 and a couple of.
What its cost? - ANS-five,400 ohms
7. the characteristic of a resistor that indicates the perfect deviation of price from the
indicated fee is called which of the following? - ANS-tolerance
8. the same old notation for switch contacts consist of which of the subsequent? -
ANS-range of pulls, wide variety of constant contacts in step with pole
9. 3 parallel branches of a circuit degree 6,4, and 2 amps. What is the full contemporary? -
ANS-12 amps
10. what are the appropriate limits of deviation of resistance for 4.7k resistor rated at 5%? -
ANS-4.465k and four.935k
11. what can add a greater layer of protection while the use of energy gear? - ANS-GFI's
12. what distinguishes a potentiometer from a rheostat? - ANS-a potentiometer has a 3rd
terminal
13. what is the circuit contemporary for a circuit containing two 1250 ohm series relay coils
with 125 volts applied? - ANS-zero.05 amps
14. what size fuse could be used in a circuit in which the regular working contemporary is 5
amps? - ANS-10 amps
15. which of the following fuse scores ought to cause a fuse to blow up if it is too low? -
ANS-voltage
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