40 questions
1.5 T/s
2 T/s
11.4 T/s
12.5 T/s
To the left
To the right
Zero position
(A)
(B)
(C)
(D)
pulling a (N) pole out of the solenoid
pushing a (S) pole into the solenoid
pulling the solenoid away from a (N) pole
pulling the solenoid away from a (S) pole
the current in the loop flows first in a clockwise , then in a counterclockwise
the current in the loop flows first in a counterclockwise, then in a clockwise direction
the current in the loop always flows in a clockwise direction
the current in the loop always flows in a counterclockwise direction
no current flows in the loop because both ends of the magnet move through the loop
the induced emf is 4 times as much
the induced emf is twice times as much
the induced emf half as much
there is no change in the induced emf
60000 V
2.4 V
0.1 V
60 V
0.15 A
0.35 A
0.5 A
0.65 A
(a) Anticlockwise , (b) Clockwise
(a) Zero , (b) Clockwise
(a) Clockwise , (b) Clockwise
(a) Clockwise , (b) Zero
0.5 A
1.145 A
1 A
0.707 A
because there's an AC source that creates a variable magnetic field
because there's an DC source that creates a variable magnetic field and there's a continuous induced
because there's an DC source that creates a Constant magnetic field and there's induced momentarily
because there's an AC source that creates a variable magnetic field and no induced current
(A)
(B)
(C)
(D)
(A)
(B)
(C)
(D)
(A)
(B)
(C)
(D)
(A)
(B)
(C)
(D)
(A)
(B)
(C)
(D)
(A)
(B)
(C)
(D)
(A)
(B)
(C)
(D)
(A)
(B)
(C)
(D)
increase
decrease
remain constant
it will switch off
(A)
(B)
(C)
(D)
(A)
(B)
(C)
(D)
6 turns , 264 V ,228.63 V
7 turns , 264 V , 228.63 V
5 turns , 300 V , 228.63 V
7 turns , 350 V , 500 V
step up , steel
step down , steel
step up , iron
step down , iron
150 V , 0.1 T , 95.45 V , 50 V
300 V , 0.1 T , 95.45 V , 50 V
500 V , 2 T , 95.45 V , 50 V
150 V , 0.1 T , 95.45 V , 100 V
Explain the results of the following
The power loss in the transmission lines (wires) will decrease
The power loss in the transmission lines (wires) will increase
The power loss in the transmission lines (wires) will remain constant
No correct answer
Explain the reason of the following
because AC used to minimize power loss by using transformer
because DC used to minimize power loss by using transformer
because AC has a larger consumed energy than DC
because AC is transmitted over short distance
60 V, 38.885 V , 0.08 sec , 7.143 X 10-3 sec , 0.05 Sec , 2.356 J
70 V, 38.885 V , 0.0857 sec , 7.243 X 10-3 sec , 0.6 Sec , 2.356 J
80 V, 38.885 V , 0.0857 sec , 7.143 X 10-3 sec , 0.05 Sec , 2.356 J
55 V, 38.885 V , 0.0857 sec , 7.143 X 10-3 sec , 0.05 Sec , 2.356 J
130 V , 141.4 V , 1/600 Sec
127.27 V , 141.4 V , 1/200 Sec
127.27 V , 141.4 V , 1/600 Sec
127.27 V , 150 V , 1/600 Sec
1.768 X 10-14 electrons
1.768 X 1014 electrons
2 X 10-14 electrons
5 X 10-3 electrons
Bonus Question
(A)
(B)
(C)
(D)
Bonus Question
(A)
(B)
(C)
(D)
Bonus Question
Electric power
current frequency
effective value of current
effective value of voltage
Bonus Question
80000 W , 128 W , 25
10000 W , 128 W , 25
80000 W , 30 W , 25
80000 W , 128 W , 5
Bonus Question
5 A , 50 turns
4.42 A , 60 turns
4.42 A , 50 turns
4.3 A , 100 turns
Bonus Question
2 rad/sec , 1.5
1.57 rad/sec , 1.5
3 rad/sec , 1.5
6 rad/sec , 5
Bonus Question
(A)
(B)
(C)
(D)
Bonus Question
25 X 103 W , 500 Turns , 16.67 A, 100 A
25 X 103 W , 100 Turns , 16.67 A, 100 A
25 X 103 W , 500 Turns , 16.67 A, 200 A
25 W , 500 Turns , 16.67 A, 100 A
Bonus Question
11 V
100 V
1100 V
0 V
Bonus Question
0.0264 H
0.02 H
0.03 H
1.203 H