ELECTRICITY FOR THE TRADES W/ACCESS
3rd Edition
ISBN: 9781264605309
Author: Petruzella
Publisher: MCG
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Chapter 1.2, Problem 16RQ
How often is the National Electrical Code updated and published?
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Chapter 1 Solutions
ELECTRICITY FOR THE TRADES W/ACCESS
Ch. 1.1 - Does the severity of an electric shock increase or...Ch. 1.1 - In general, voltage levels above what value are...Ch. 1.1 - In general, current levels above what value are...Ch. 1.1 - What circuit fault can result in an arc flash?Ch. 1.1 - Define each of the following terms associated with...Ch. 1.1 - Explain why an arc flash is so potentially...Ch. 1.1 - What is a permit-required confined space?Ch. 1.1 - What does the term personal protective equipment...Ch. 1.1 - What personal protective attire is required when...Ch. 1.1 - When should face shields be worn?
Ch. 1.1 - A fall arrest system must be rigged so that...Ch. 1.1 - A ladder is used to reach the top of a building 16...Ch. 1.1 - What are the deck requirements for a scaffold work...Ch. 1.1 - Prob. 14RQCh. 1.1 - List the three ingredients required to sustain a...Ch. 1.1 - Which classes of fire are multipurpose...Ch. 1.1 - List four hazardous properties or characteristics.Ch. 1.2 - Prob. 1RQCh. 1.2 - Compare the terms grounding and bonding.Ch. 1.2 - Why is the earth not considered to be an effective...Ch. 1.2 - Explain what is meant by a ground fault.Ch. 1.2 - How does a ground-fault circuit interrupter (GFCI)...Ch. 1.2 - How does a ground-fault circuit interrupter (GFCI)...Ch. 1.2 - Explain what is meant by an arcing fault.Ch. 1.2 - Compare the amount of current that results from...Ch. 1.2 - Compare what GFCIs and AFCIs protect against.Ch. 1.2 - What does a lockout-tagout procedure refer to?Ch. 1.2 - Prob. 11RQCh. 1.2 - A voltmeter is used to verify that no voltage is...Ch. 1.2 - What is the main goal of OSHA?Ch. 1.2 - What is the primary purpose of the rules set forth...Ch. 1.2 - Assume a piece of electrical equipment has been...Ch. 1.2 - How often is the National Electrical Code updated...
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- Q6 The FET shown in Fig. 1.43 has gm = 3.4 mS and rd =100 K. Find the approximate lower cutoff frequency. Ans: 735.1 Hz. 25V 1.5ΜΩ 20 ΚΩ 0.02µF HH 2ΚΩ 0.02µF HH 330kQ 820 ΩΣ 1.0µF www 40ΚΩarrow_forwardThe solution is with a pen and paper, without artificial intelligence.arrow_forwardQ5 For the network of Fig. 1.42; determine re, Avmid, Zi, Avsmid, and the low cutoff frequency. Ans: 30.23 2; 0.983; 21.13 KS; 0.955; 193.16 Hz. 14V + Vs 1 ΚΩ 0.1 µF Vi 120 ΚΩ B-100 0.1 µF o Vo 30 ΚΩ 32.2 ΚΩ 18.2 ΚΩ Fig. 1.42 Circuit for Q5. 31arrow_forward
- Q1) (a) State Biot-Savart's law (b) The y- and z-axes, respectively, carry filamentary currents 10 A along ay and 20 A along -az. Find H at (- 3, 4, 5).arrow_forwardQ5) a) State Ampere's circuit law. b) In a certain conducting region, H = yz(x² + y²)ax - y²xzay + 4x²y²a, A/m. (a) Determine J at (5, 2, -3) (b) Find the current passing through x = -1, 0 < y, z <2 (c) Show that V⚫H=0arrow_forwardFig. 1.43 Circuit for Q6- Q7 For the network of Fig. 1.44: a-Determine fH; and fHo b- Find fg and fr. c- Sketch the frequency response for the high-frequency region using a Bode plot and determine the cutoff frequency. Ans: 277.89 KHz; 2.73 MHz; 895.56 KHz; 107.47 MHz. 14V Cw=5pF Cbc-12 pF Cwo-8pF Che=40. pF 5.6kQ C-8pF 68kQ 0.47µF ww 0.82 kQ V₁ 0.47uF AN B=120 3.3kQ 10ΚΩ 1.2k0 =20µF Fig. 1.44 Circuit for Q7.arrow_forward
- Q3) An infinite long filamentary wire carries a current of 2A in the +z direction. calculate: (a)B at (-3,4,7) (b) the flux through the square loop described by 25 16,0 Sz≤4, 0=90°.arrow_forwardQ3) An infinitely long conductor is bent into an L shape as shown in Figure below. If a direct current of 5 A flows in the current, find the magnetic field intensity at (2, 2, 0). 5 A 5 Aarrow_forwardEx. 1° let Ĥ = -y (x²+y^³) ax + x (x²+y"`) ây":" H 5 find J M total current Passing through Z=oplane with the rectangular -\-2<<2arrow_forward
- Q) Given the magnetic field vector potential: A= y² za, +2(x+1)y z ay- (x+1) z² az (A/m), find: (1)magnetic flux density B, (2)magnetic field intensity H, (3) current density J and (4) the current passing through surface y = 1,0≤x≤1, 0 ≤z≤1.arrow_forwardQ9 For the network of Fig. 1.46: a- Determine gmo and gm. b- Find A, and Ay, in the mid-frequency range. c- Determine fH; and fHo Ans: 3.33 mS; 1.91 mS; -4.39; -4.27; 1.84 MHz; 3.68 MHz. + 1.5 kQ 20V 3220ΚΩ 1µF 68kQ AN CwF4pF Co=8 pF Cwo=6pF Cgs=12pF 53.9ΚΩ Cds=3pF 6.8µF o Vo Dss=10mA Vp=-6V 15.6 ΚΩ 2.2k =10µF Fiarrow_forwardQs For the network of Fig. 1.45: a- Determine fH, and fHo b- Find fp and fr c- Sketch the frequency response for the high-frequency region using a Bode plot and determine the cutoff frequency. Ans: 2.87 MHz, 185.78 MHz, 1.05 MHz, 105 MHz. 14V CWF8pF Cwo-10pF Cbc-20 pF Cbe=30pF 120 ΚΩ Co=12pF 1 ΚΩ B-100 0.1 µF Vs 0.1 HF Z; Vo www 30 kQ 2.2 ΚΩ € 8.2 kQ Fig. 1.45 Circuit for Carrow_forward
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