Microelectronics: Circuit Analysis and Design
4th Edition
ISBN: 9780073380643
Author: Donald A. Neamen
Publisher: McGraw-Hill Companies, The
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Question
Chapter 8, Problem 8.11EP
(a)
To determine
The value of the current
(b)
To determine
The value of the current
(c)
To determine
The current gain of the circuit and the current gain as per equation 8.55.
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Students have asked these similar questions
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…
Manual solution only, no Al used
Choose 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…
Chapter 8 Solutions
Microelectronics: Circuit Analysis and Design
Ch. 8 - Prob. 8.1EPCh. 8 - Prob. 8.2EPCh. 8 - Prob. 8.3EPCh. 8 - Prob. 8.1TYUCh. 8 - Prob. 8.2TYUCh. 8 - Prob. 8.3TYUCh. 8 - Prob. 8.4EPCh. 8 - Prob. 8.5EPCh. 8 - Prob. 8.7EPCh. 8 - Prob. 8.4TYU
Ch. 8 - Prob. 8.5TYUCh. 8 - Prob. 8.6TYUCh. 8 - A transformercoupled emitterfollower amplifier is...Ch. 8 - Prob. 8.7TYUCh. 8 - Prob. 8.9EPCh. 8 - Prob. 8.11EPCh. 8 - Consider the classAB output stage shown in Figure...Ch. 8 - From Figure 8.36, show that the overall current...Ch. 8 - Prob. 1RQCh. 8 - Describe the safe operating area for a transistor.Ch. 8 - Why is an interdigitated structure typically used...Ch. 8 - Discuss the role of thermal resistance between...Ch. 8 - Define and describe the power derating curve for a...Ch. 8 - Define power conversion efficiency for an output...Ch. 8 - Prob. 7RQCh. 8 - Describe the operation of an ideal classB output...Ch. 8 - Discuss crossover distortion.Ch. 8 - What is meant by harmonic distortion?Ch. 8 - Describe the operation of a classAB output stage...Ch. 8 - Describe the operation of a transformercoupled...Ch. 8 - Prob. 13RQCh. 8 - Sketch a classAB complementary MOSFET pushpull...Ch. 8 - What are the advantages of a Darlington pair...Ch. 8 - Sketch a twotransistor configuration using npn and...Ch. 8 - Prob. 8.1PCh. 8 - Prob. 8.2PCh. 8 - Prob. 8.3PCh. 8 - Prob. 8.4PCh. 8 - Prob. 8.5PCh. 8 - Prob. D8.6PCh. 8 - A particular transistor is rated for a maximum...Ch. 8 - Prob. 8.8PCh. 8 - For a power MOSFET, devcase=1.5C/W , snkamb=2.8C/W...Ch. 8 - Prob. 8.10PCh. 8 - The quiescent collector current in a BiT is ICQ=3A...Ch. 8 - Prob. 8.12PCh. 8 - Prob. 8.13PCh. 8 - Prob. 8.14PCh. 8 - Prob. 8.15PCh. 8 - Prob. 8.16PCh. 8 - Consider the classA sourcefollower circuit shown...Ch. 8 - Prob. 8.18PCh. 8 - Prob. 8.19PCh. 8 - Prob. 8.20PCh. 8 - Prob. 8.21PCh. 8 - Consider an idealized classB output stage shown in...Ch. 8 - Consider an idealized classB output stage shown in...Ch. 8 - Prob. 8.24PCh. 8 - For the classB output stage shown in Figure P8.24,...Ch. 8 - Prob. 8.26PCh. 8 - Prob. 8.27PCh. 8 - Consider the classAB output stage in Figure P8.28....Ch. 8 - Prob. 8.29PCh. 8 - Prob. D8.30PCh. 8 - Prob. 8.31PCh. 8 - Prob. D8.32PCh. 8 - Consider the transformercoupled commonemitter...Ch. 8 - The parameters for the transformercoupled...Ch. 8 - A BJT emitter follower is coupled to a load with...Ch. 8 - Consider the transformercoupled emitter follower...Ch. 8 - A classA transformer-coupled emitter follower must...Ch. 8 - Repeat Problem 8.36 if the primary side of the...Ch. 8 - Consider the circuit in Figure 8.31. The circuit...Ch. 8 - Prob. D8.40PCh. 8 - The value of IBiass in the circuit shown in Figure...Ch. 8 - The transistors in the output stage in Figure 8.34...Ch. 8 - Consider the circuit in Figure 8.34. The supply...Ch. 8 - Prob. 8.44PCh. 8 - Prob. 8.45PCh. 8 - Consider the classAB MOSFET output stage shown in...Ch. 8 - Prob. 8.47PCh. 8 - Consider the classAB output stage in Figure P8.48....Ch. 8 - For the classAB output stage in Figure 8.36, the...
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- 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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