One barrel of oil has about the same heat content as how much coal

Q-1: One barrel of oil has about the same heat content as how much coal:

1) 70 pounds
2) 700 pounds
3) 1,400 pounds
4) 2,800 pounds
ANSWER: 2 -- 700 POUNDS

Q-2: Two identical resistors are connected in parallel and consume 200 watts together. A third identical resistor is added in parallel. The total power consumed is:

1) 100 watts
2) 200 watts
3) 300 watts
4) 400 watts
ANSWER: 3 -- 300 WATTS

Q-3:The length of both sides of a square parallel plate capacitor are doubled. The capacitance is:

1) halved
2) the same
3) doubled
4) quadrupled
ANSWER: 4 -- QUADRUPLED

Q-4:A series circuit consists of a two ohm RESISTOR and a one ohm INDUCTOR. The relationship between current and voltage is:

1) current will lag by 30 degrees.
2) current will lag by 26 degrees.
3) current will lead by 26 degrees.
4) current will lead by 30 degrees.
ANSWER: 2 -- CURRENT WILL LAG BY 26 DEGREES.

Q-5: A transformer has a turns ratio of two to one. If a 100 ohm resistor is connected on the high side, its resistance as measured on the low side would be:

1) 25 ohms
2) 50 ohms
3) 100 ohms
4) 400 ohms
ANSWER: 1 -- 25 OHMS

Q-6: The doorbell on your house requires a 12 volt alternating current. A transformer having a primary winding of 1,600 turns is to be used to step down your house's 110-volt alternating current. How many turns are there on the secondary winding?

ANSWER: 175 TURNS

Q-7: What is the impedance of a one microfarad capacitor at 60 Hertz:

1) 16,700 ohms
2) 2,650 ohms
3) 3.8x10-4 ohms
4) 6x10-5 ohms
ANSWER: 2 -- 2,650 OHMS

Q-8:Which of the following instruments should never have their test leads connected directly to a wall outlet:

1) ammeter
2) voltmeter
3) oscilloscope
4) frequency counter
ANSWER: 1 -- AMMETER

Q-9: The speed of light through a single-mode optical fiber is approximately:

1) c (equal to 3 x 108 m/s)
2) 70 percent of c
3) 80 percent of c
4) 90 percent of c
ANSWER: 2 -- 70 PERCENT OF c