Eng 2MM3 Assignment #2
Due: Nov. 1st 2010 by 4:15 PM at ITB-A110 (ENG2MM3 Box).
Question 1: (Points 70) A single phase step - up transformer is rated 80 KVA,
400 V !4000 V. The results of Open Circuit and Short Circuit tests are as
follows:
Open Circuit t
ENG2MM3 Mid-Term Exam. #1, Term I, 2009
2 pages
7:00pm ~ 9:00pm, Oct. 20 2009
Question 1 [34 points]. Consider the circuit shown in Fig. 1. The voltage source is given
by
volt with the frequency of
. The resistance, inductance
and capacitance are
,
and
,
ENG 2MM3 Assignment 3, Fall 2009
Due: Nov. 16, 2009 in Class
Total points: 63
Q. 1: (Points 42) A three-phase power system is shown in fig 1. It consists of an ideal
210 volts Y-connected three-phase generator connected through a three-phase
transmission
ENG2MM3 Mid-Term Exam. #1, Term 1, 2008
2 pages
1. The circuit shown is driven by a voltage of
7:0pm ~ 9:00pm, Oct. 16, 2008
at a frequency of
.
a) Find the input impedance
b) Find the power factor ( )for the circuit
c) Plot the phasor diagram for I using
ENG 2MM3 Assignment #1
Due: October 8 , 2010 by 4:15 P.M. at ITB-A110 (ENG2MM3 Box)
Question 1. (30 points)
An inductive load absorbs a current of I
rms
= 28A from a power line with v(t) =
169.7sin(378t) volt. A wattmeter connected into the line gives a r
ENG2MM3 Mid-Term Exam. #2, Term 1, 2008-2009 1 page 7:00pm ~ 8:40pm, Nov. 21, 2008
Points for Q1: 45
Q. 1. A three-phase power system is shown in fig 1. The phase voltage of the Y connected generator is
220 V. The transmission line has an impedance of
per
ENG 2MM3 Mid Term Examination II
November 18, 2009; 7-9 pm
Q1: A three-phase power system is shown in the following figure. It consists of an ideal 240
volts Y-connected three-phase generator connected through a three-phase transmission line to
a -connect
ENG 2MM3 Assignment #1
Due: October 13, 2009 at my office ITB-A216
Question 1. (42 points)
The circuit shown in fig. 1(ii) is driven by the voltage source v(t) shown in fig. 1(i) with
frequency f =60 Hz. Using the voltage source as the reference phasor,
(
ENGINEER 2MM3 ASSIGNMENT #2 SOLUTION
Due in class on Monday, 19 October 2015
1. A core with three legs is shown in the figure below. Its depth is 5 cm, and there
are 100 turns on the leftmost leg. The relat
ENGINEER 2MM3 ASSIGNMENT #1 SOLUTION
Due in class on Monday, 28 September 2015
1. Evaluate and sketch the voltage V2(t) for the circuit shown below in terms of V,
R1, R2 and L. assuming the switch is closed a
ENGINEER 2MM3 ASSIGNMENT #3 SOLUTION
Due in class on Monday, 2 November 2015
1. Compute the current I supplied to the load, the power factor of the load, and the real,
reactive, apparent and complex power suppl
ENGINEER 2MM3 ASSIGNMENT #4 SOLUTION
Due in class on Monday, 23 November 2015
1. A 120 V three-phase power system is shown below. It consists of an ideal ! = 120 V
(rms) Y-connected three-phase generator through a three-phase transmission line
wi
NAME: _
STUDENT NO: _
ENGINEER 2MM3 MID-TERM TEST #2
November 9, 2015
This test is 50 minutes long and is closed book. Please answer the following three questions
in the space provided. Please use the back of
Eng 2MM3 Assignment #3
Due: March 22 by 4:15 PM at ITB-A110 (ENG2MM3 Box)
Q . 1: (Points 42) A three-phase power system is shown in fig 1. It consists of an ideal 240 volts
Y-connected three-phase generator connected through a three-phase transmission !"#
EN!2MM3 Mid-Term Exam. #1, Term 1, 2010 2 pages 7:00pm ~ 9:00pm, Oct. 18, 2010
Question 1. (33 points) The circuit shown in fig. 1(b) is driven by the voltage source
v(t) as shown in fig. 1(a) with f = 60 Hz. Using the voltage source as the reference
phas
ENG 2MM3 Assignment #1
Due: Feb 4 by 4:15 PM at ITB-A110 (ENG2MM3 Box).
Question1. ( 39 Points)
The circuit shown in fig. 1 is driven by the voltage source v(t) shown in fig.2
with frequency f =60 Hz. Using the voltage source as the reference phasor,
(a)
ENG-2MM3 ELECTRICAL CIRCUITS AND POWER
Name
Student Number
INSTRUCTOR NAME
S. Kumar
DURATION OF EXAMINATION: 3 hours
McMASTER UNIVERSITY FINAL EXAMINATION
Dec 14, 2011
THIS EXAMINATION PAPER INCLUDES 6 PAGES AND 9 QUESTIONS. YOU
ARE RESPONSIBLE FOR ENSURI
Eng2mm3 Midterm 2012
Duration of examination: 1 hour
You can use any calculator.
Total Marks : 15
1. F or an ideal transformer, show that
22 _ _ is.
v5 _ N5 ip'
where v = voltage, i = current and N = no. of turns. The subscripts p and 5 refer to the
prima
Eng 2MM3 Mid-term Examination II
March 18, 2010
7-9 pm
Q .1 (51 Points): A three-phase power system is shown in the following figure. It consists of
an ideal 210 volts Y-connected three-phase generator connected through a three-phase
transmission line to
ENG 2MM3 Assignment 4, Winter 2010
Due: April 08, 2010 by 4:15 PM at ITB-A110 (ENG2MM3 Box)
Problem 1
30 Points
A 6 pole, 3 phase, 100 HP Y-connected induction motor operates at 420 V, 60 Hz. The
motor draws a total power of 70 kW and the line current is
ENG 2MM3 Mid Term Examination II
November 18, 2010; 7:00-9:00 PM
Q1: (Points 63) A three-phase power system is shown in the following figure (Fig. 1).
It consists of an ideal 380 volts Y-connected three-phase generator connected
through a three-phase tran
Eng 2MM3 Assignment #2
Due: March 12 by 4:15 PM at ITB-A110 (ENG2MM3 Box).
Question 1: (Points 78) A single phase step-down transformer is rated 80KVA, 4000V
400V. The results of Open Circuit and Short Circuit tests are as follows:
a) Calculate the rated
ENG 2MM3-2014
Electrical Circuits & Power
Mid-term 1: Review
ENG2MM3-2014
1
Problem 1: A two-legged magnetic core with an air gap is shown in the next slide. The depth
of the core is 5 cm, the length of the air gap in the core is 0.05 cm, and the number o
ENG 2MM3-2014
Electrical Circuits & Power
Mid-term II: Review
March 10, 2014
ENG2MM3-2014
1
Problem 1: An ideal transformer has Np turns in the primary
winding and Ns turns in the secondary winding. (a) Find the
equation for the turns ratio and state the
ENG2MM3 Mid-Term Exam. #1, Term II, 2010
3 pages
7:00pm ~ 9:00pm, Feb. 11 2010
1. Consider the circuit shown in Fig. 1. The voltage source is given by
with the frequency of
. The resistance, inductance and capacitance are
,
,
and
, respectively.
Find:
a)
Eng 2MM3 Assignment #3
Due : Nov. 15th 2010 by 4:15 PM at ITB A-110
(ENG2MM3 Box).
Q. 1: (Points 55) A three-phase power system is shown in fig 1. It consists of an ideal 240 volts
Y-connected three-phase generator connected through a three-phase transmis
ENG2MM3Assignment4,Fall2010
Due:Dec.3,2010
Totalpoints:60
Problem1(30points)
A threephase 60 Hz induction motor operates at 480 V. The number of poles is 6.
Themotordrawsatotalpowerof80kWandthelinecurrentis60Amps.Therotor
speedis1120rpm.Thestatoris connec
Eng 2MM3 Assignment #2
Due: Nov 09, 2009 in Class
Question 1: (Points 87) A single phase step-up transformer is rated 60KVA, 300V
3000V. The results of Open Circuit and Short Circuit tests are as follows:
a) Calculate the rated current on each side of the