Microelectronics: Circuit Analysis and Design
4th Edition
ISBN: 9780073380643
Author: Donald A. Neamen
Publisher: McGraw-Hill Companies, The
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Chapter 6, Problem 2RQ
To determine
To explain: The reason for splitting transistor analysis into a dc analysis and an ac analysis.
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1- A squirrel cage induction motor is not selected when
(A) initial cost is the main consideration (B) maintenance cost is to be kept low
(C) higher starting torque is the main consideration (D) all above considerations are involved
2- The torque of an induction motor is ..............
(A) directly proportional to slip (B) inversely proportional to slip...
(C) proportional to the square of the slip (D) none of the above
3- Insertion of resistance in the stator of an induction motor.
(A) increases the load torque (B) decreases the starting torque
(C) increases the starting torque (D) none of above
tool to slip
10 or of the above
4- Increase in the length of air-gap in the induction motor results in the increasing of its
(A) air-gap flux (B) magnetizing current
(C) speed (D) power factor
5- In cumulatively cascade method for speed controlling, if PA is the number of poles of main motor and
PB is the number of poles of auxiliary motor. Then the speed of the set…
Chapter 6 Solutions
Microelectronics: Circuit Analysis and Design
Ch. 6 - The circuit parameters for the circuit in Figure...Ch. 6 - For the circuit in Figure 6.3, assume transistor...Ch. 6 - For the circuit in Figure 6.14(a), let =90 ,...Ch. 6 - Using the circuit and transistor parameters given...Ch. 6 - Consider the circuit in Figure 6.18. The circuit...Ch. 6 - Repeat Example 6.4 if the quiescent collector...Ch. 6 - For the circuit in Figure 6.31, let RE=0.6k ,...Ch. 6 - Prob. 6.6EPCh. 6 - The parameters of the circuit shown in Figure 6.28...Ch. 6 - For the circuit shown in Figure 6.31, let =100 ,...
Ch. 6 - Design the circuit in Figure 6.35 such that it is...Ch. 6 - For the circuit in Figure 6.28, the smallsignal...Ch. 6 - The circuit in Figure 6.38 has parameters V+=5V ,...Ch. 6 - For the circuit in Figure 6.39, let =125 ,...Ch. 6 - (a) Assume the circuit shown in Figure 6.40(a) is...Ch. 6 - For the circuit in Figure 6.39, let =125 ,...Ch. 6 - Reconsider the circuit in Figure 6.38. Let =120 ,...Ch. 6 - For the circuit shown in Figure 6.48, let =120 ,...Ch. 6 - For the circuit in Figure 6.31, use the parameters...Ch. 6 - Consider the circuit in Figure 6.38. Assume...Ch. 6 - For the circuit shown in Figure 6.49, let VCC=12V...Ch. 6 - Consider the circuit and transistor parameters...Ch. 6 - For the circuit in Figure 6.54, the transistor...Ch. 6 - Assume the circuit in Figure 6.57 uses a 2N2222...Ch. 6 - For the circuit in Figure 6.58, RE=2k , R1=R2=50k...Ch. 6 - Prob. 6.12TYUCh. 6 - For the circuit shown in Figure 6.63, the...Ch. 6 - Prob. 6.14TYUCh. 6 - For the circuit shown in Figure 6.64, let RS=0 ,...Ch. 6 - Consider the circuit in Figure 6.70(a). Let =100 ,...Ch. 6 - In the circuit in Figure 6.74 the transistor...Ch. 6 - Discuss, using the concept of a load line, how a...Ch. 6 - Prob. 2RQCh. 6 - Prob. 3RQCh. 6 - Sketch the hybrid- equivalent circuit of an npn...Ch. 6 - Prob. 5RQCh. 6 - Prob. 6RQCh. 6 - Prob. 7RQCh. 6 - Prob. 8RQCh. 6 - Prob. 9RQCh. 6 - Sketch a simple emitter-follower amplifier circuit...Ch. 6 - Sketch a simple common-base amplifier circuit and...Ch. 6 - Compare the ac circuit characteristics of the...Ch. 6 - Prob. 13RQCh. 6 - Prob. 14RQCh. 6 - (a) Determine the smallsignal parameters gm,r ,...Ch. 6 - (a) The transistor parameters are =125 and VA=200V...Ch. 6 - A transistor has a current gain in the range 90180...Ch. 6 - The transistor in Figure 6.3 has parameters =120...Ch. 6 - Prob. 6.5PCh. 6 - For the circuit in Figure 6.3, =120 , VCC=5V ,...Ch. 6 - The parameters of each transistor in the circuits...Ch. 6 - The parameters of each transistor in the circuits...Ch. 6 - The circuit in Figure 6.3 is biased at VCC=10V and...Ch. 6 - For the circuit in Figure 6.14, =100 , VA= ,...Ch. 6 - Prob. 6.11PCh. 6 - The parameters of the transistor in the circuit in...Ch. 6 - Assume that =100 , VA= , R1=33k , and R2=50k for...Ch. 6 - The transistor parameters for the circuit in...Ch. 6 - For the circuit in Figure P6.15, the transistor...Ch. 6 - Prob. D6.16PCh. 6 - The signal source in Figure P6.18 is s=5sintmV ....Ch. 6 - Consider the circuit shown in Figure P6.19 where...Ch. 6 - Prob. 6.20PCh. 6 - Figure P6.21 The parameters of the transistor in...Ch. 6 - Prob. 6.22PCh. 6 - For the circuit in Figure P6.23, the transistor...Ch. 6 - The transistor in the circuit in Figure P6.24 has...Ch. 6 - For the transistor in the circuit in Figure P6.26,...Ch. 6 - If the collector of a transistor is connected to...Ch. 6 - Consider the circuit shown in Figure P6.13. Assume...Ch. 6 - For the circuit in Figure P6.15, let =100 , VA= ,...Ch. 6 - Consider the circuit in Figure P6.19. The...Ch. 6 - The parameters of the circuit shown in Figure...Ch. 6 - Consider the circuit in Figure P6.26 with...Ch. 6 - For the circuit in Figure P6.20, the transistor...Ch. 6 - In the circuit in Figure P6.22 with transistor...Ch. 6 - For the circuit in Figure P6.24, the transistor...Ch. 6 - Prob. 6.40PCh. 6 - Consider the ac equivalent circuit in Figure...Ch. 6 - For the ac equivalent circuit in Figure P6.42,...Ch. 6 - The circuit and transistor parameters for the ac...Ch. 6 - Consider the circuit in Figure P6.45. The...Ch. 6 - For the transistor in Figure P6.47, =80 and...Ch. 6 - Consider the emitterfollower amplifier shown in...Ch. 6 - The transistor parameters for the circuit in...Ch. 6 - In the circuit shown in Figure P6.51, determine...Ch. 6 - The transistor current gain in the circuit shown...Ch. 6 - Consider the circuit shown in Figure P6.47. The...Ch. 6 - For the circuit in Figure P6.54, the parameters...Ch. 6 - Figure P6.59 is an ac equivalent circuit of a...Ch. 6 - The transistor in the ac equivalent circuit shown...Ch. 6 - Consider the ac equivalent commonbase circuit...Ch. 6 - Prob. 6.62PCh. 6 - The transistor in the circuit shown in Figure...Ch. 6 - Repeat Problem 6.63 with a 100 resistor in series...Ch. 6 - Consider the commonbase circuit in Figure P6.65....Ch. 6 - For the circuit shown in Figure P6.66, the...Ch. 6 - The parameters of the circuit in Figure P6.67 are...Ch. 6 - For the commonbase circuit shown in Figure P6.67,...Ch. 6 - Consider the circuit shown in Figure P6.69. The...Ch. 6 - In the circuit of Figure P6.71, let VEE=VCC=5V ,...Ch. 6 - Consider the ac equivalent circuit in Figure...Ch. 6 - The transistor parameters in the ac equivalent...Ch. 6 - Consider the circuit shown in Figure 6.38. The...Ch. 6 - For the circuit shown in Figure 6.57, the...
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- Chose the correct answer: 1- The resultant flux in stator winding of three-phase induction motor is equal to (A) Maximum value of flux due to any phase (B) Twice of the maximum value of flux due to any phase. (C) 0.5 times the maximum value of flux due to any phase (D) 1.5 times the maximum value of flux due to any phase 2- Which one of the following starters cannot be used for 3-phase, star - connected, slip-ring induction motor? (A) Auto-transformer starter (B) Star-delta starter (C) Direct-on-line starter (D) Rotor resistance starter 3- The crawling in the induction motor is caused by.............. (A) low voltage supply (B) high loads (D) improper design of the machine (C) harmonics developed in the motor 4- The 'cogging' of an induction motor can be avoided by........... (A) good ventilation (B) using DOL starter (C) star-connecting of stator winding (D) having number of rotor slots more or less than the number of stator slots 5- The method which can be used for the speed control…arrow_forwardManual solution only, no Al usedarrow_forwardChoose the correct answer: 1- The stator core of a 3- phase induction motor is laminated in order to reduce the Eddy current loss ) Weight of the stator (B) Hysteresis loss (C) Both eddy current and hysteresis loss - In cumulatively cascade method for speed controlling of a 3-phase induction motor, if PA is the number of poles of main motor and P, is the number of poles of auxiliary motor. Then the speed of the motor B is given by Ⓐ120f/ PA + PB CO (B) 120f/PA-Ps (C) 120f/PA (D) 120f/ Ps 3-Direct online starter is used for 3- phase induction motors having capacity COOOO ⑭Ⓐ Less than 5 h.p. (B) Less than 10 h.p. (C) Greater than 10 h.p. (D) For any capacity motor 4-Crawling of a 3- phase induction motor is a phenomena mainly associated with (B) 5th harmonics Ⓒ) 7 th harmonics (D) 2nd harmonics (A) 3rd harmonics 5-Cogging in a 3- phase induction motor is caused --------- (Ⓐ) If the number of stator slots are equal to number of rotor slots (B) If the motor is running at fraction of its…arrow_forward
- Choose the correct answer: 1-We avoid line starting of induction motor and use starter because... (A) It will run in reverse direction (B) It will pick up very high speed and may go out of step Motor takes five to seven times its full load current (D) Starting torque is very high 2-DOL starting of induction motors is usually restricted to........... A Low horsepower motors (D) High speed motors (B) Variable speed motors (C) High horsepower motors 3- The method which can be used for the speed control of induction motor from stator side is......... (A) V/f control (B) Controlling number of stator poles to control Ns (C) Adding rheostats in stator circuit All of these 4-In cumulatively cascade method for speed controlling, if PA is the number of poles of main motor and PB is the number of poles of auxiliary motor. Then the speed of the rotor B is given by 120f/PA + PB (B) 120f/PA-PB (C) 120f/PA 5-The crawling in the induction motor is caused by.............. (A) low voltage supply (B)…arrow_forwardFor the picture attached below the parameters are the following: f1 = 400 Hz m(t) = sin(2 fmt), where fm = 300 Hz. Assume ideal LPFs with a cut-o frequency of f1. What would be the value of frequency f2 be so that the carrier frequency is 2.5kHz? What modification of this system is required to generate USSB (at the same carrier frequency)? ( Note: this does not involbe changing the oscillator frequencies)arrow_forwardDetermine (analytically) the signals at points A-Garrow_forward
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