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TS_POWER_10_TO_1 02 if the primary voltage V= 51 sin 4t V, and the load is 29...
An rms voltage of 29 V is required for a device whose impedance is 12 12....
An rms voltage of 29 V is required for a device whose impedance is 12 12. (a) What should the turn ratio of a transformer be, so the device can be operated from a 125 V line? N2 / N1 = 0.232 (b) Suppose the transformer is accidentally connected in reverse with the secondary winding across the 125 V-rms line and the 12-12 load across the primary. How much rms current will then flow in the primary winding? ХА
5. (10 pts) A transformer is designed to have an output voltage of 1350 V (rms)...
5. (10 pts) A transformer is designed to have an output voltage of 1350 V (rms) when the primary coil is connected to a 150V (rms) source. (i) Is this a step-up or step-down transformer? f there are 2700 turns on the secondary winding (coil), how many turns are required on the primary? (ii) If a load resistor across the secondary draws a peak current of 1.5.A, what is the peak and the rms current in the primary?
1kVA ideal single phase step-up transformer
Q1 A 1kVA ideal single phase step-up transformer is supplied by a 24 V ac power source and is delivering power to a 10 Ω resistive load connected to the secondary side. If the transformer is operated at full load (1kVA), determine, a) the secondary current IS; (3 marks) b) the secondary voltage VS; (2 marks) c) the primary current IP; (2 marks) d) the turn ratio of primary winding to secondary winding; and (2 marks) e) the number of...
Q1. The secondary winding of a transformer has a terminal voltage of Vs(t) = 325.27 sin...
Q1. The secondary winding of a transformer has a terminal voltage of Vs(t) = 325.27 sin 3770 V. The turns ratio of the transformer is 100:200 (a = 0.50). If the secondary current of the transformer is Is(t) = 11.32 sin (377t - 36.87°) A, The impedances of this transformer referred to the primary side are Req=0.2002 Rc =95022 Xeq=0.7500 Xm=3800 c) Obtain the efficiency of the transformer (10 marks
A coil is supplied from an AC source.... all the previous answers doesn’t show or state...
A
coil is supplied from an AC source....
all
the previous answers doesn’t show or state Em= sqrt 2 * E, same for
the current. is it because the ratio will be the same?
TOTAL [19] QUESTION 02 A coil is supplied from an A.C source that is represented by the following equations for voltage and current: e_ 296,985 sin(315t+72) V , 5.303 sin (315t-12) A 2.1 Calculate the resistance and inductance of the coil. 2.2 Calculate the power factor...
In the figure below a thin coil of radius r1= 4 cm, containing N1= 5300 turns,...
In the figure below a thin coil of radius r1= 4 cm, containing
N1= 5300 turns, is connected through a resistor R = 100 Ω to an AC
power supply running at a frequency f= 2100 so that the current
through the resistor (and coil) is I1sin(2π×2100t). The voltage
across the resistor triggers an oscilloscope that also displays
this voltage, which is 10 V peak-to-peak and therefore has an
amplitude of 5 V (and therefore the amplitude of the current...
Problem 1: The secondary winding of a transformer has a terminal voltage of v, (t) 282.8...
Problem 1: The secondary winding of a transformer has a terminal voltage of v, (t) 282.8 sin 377t V. The turns ratio of the transformer is 100:200 (a0.50) The impedances of this transformer referred to the primary side are The equivalent circuit is shown below lf (a) If the secondary current of the transformer is i,()-7.07sin(3771-36.87) A, what is the primary current of this transformer? (20 points) HINTS: I. Peak values of the secondary voltage and current are specified in...
The S.C. test on a 1-phase transformer, with the primary winding short-circuited and 30 V applied...
The S.C. test on a 1-phase transformer, with the primary winding short-circuited and 30 V applied to the secondary gave a wattmeter reading of 60 W and secondary current of 10 A. II the normal applied primary voltage is 200 V, the transformation ratio 1:2 and the full-load secondary current 10 A, calculate the secondary p.d. at full-load current for (a) unity power factor (b) power factor 0.8 lagging. these are the answers [ 394 V; 377.6 V ]
3. A resistor of R-10 0hms is connected in series with an inductor L-I mH. Afera...
3. A resistor of R-10 0hms is connected in series with an inductor L-I mH. Afera batery with the e.m.f. of 1 V is connected across this RL circuin, what is the current as a function of time, i()? (25 pts.) Ileieyl Ie9n3 10.001 YHg 4. An AC transformer has two windings, Np5000 turns, N 500 turns. If the power supplied to the load is I kW, primary voltage is 2200 V, what are the voltage and the current in...
2. The secondary winding of a transformer has a terminal voltage of (t)=169.7 sin3141 V. The...
2. The secondary winding of a transformer has a terminal voltage of (t)=169.7 sin3141 V. The turn ratio of the transformer is 40:200. The impedances of this transformer referred to the primary side are: Rey-0.15 2. Re-50 Q2, X-0.25 S2, X-25 . If the secondary current of the transformer is i,(0=14.14 sin(3141-53.139) A, (a) What is the primary current of this transformer? (10%) (b) What are its voltage regulation and efficiency? (10%)
An rms voltage of 29 V is required for a device whose impedance is 12 12. (a) What should the turn ratio of a transformer be, so the device can be operated from a 125 V line? N2 / N1 = 0.232 (b) Suppose the transformer is accidentally connected in reverse with the secondary winding across the 125 V-rms line and the 12-12 load across the primary. How much rms current will then flow in the primary winding? ХА
5. (10 pts) A transformer is designed to have an output voltage of 1350 V (rms) when the primary coil is connected to a 150V (rms) source. (i) Is this a step-up or step-down transformer? f there are 2700 turns on the secondary winding (coil), how many turns are required on the primary? (ii) If a load resistor across the secondary draws a peak current of 1.5.A, what is the peak and the rms current in the primary?
Q1. The secondary winding of a transformer has a terminal voltage of Vs(t) = 325.27 sin 3770 V. The turns ratio of the transformer is 100:200 (a = 0.50). If the secondary current of the transformer is Is(t) = 11.32 sin (377t - 36.87°) A, The impedances of this transformer referred to the primary side are Req=0.2002 Rc =95022 Xeq=0.7500 Xm=3800 c) Obtain the efficiency of the transformer (10 marks
A
coil is supplied from an AC source....
all
the previous answers doesn’t show or state Em= sqrt 2 * E, same for
the current. is it because the ratio will be the same?
TOTAL [19] QUESTION 02 A coil is supplied from an A.C source that is represented by the following equations for voltage and current: e_ 296,985 sin(315t+72) V , 5.303 sin (315t-12) A 2.1 Calculate the resistance and inductance of the coil. 2.2 Calculate the power factor...
Problem 1: The secondary winding of a transformer has a terminal voltage of v, (t) 282.8 sin 377t V. The turns ratio of the transformer is 100:200 (a0.50) The impedances of this transformer referred to the primary side are The equivalent circuit is shown below lf (a) If the secondary current of the transformer is i,()-7.07sin(3771-36.87) A, what is the primary current of this transformer? (20 points) HINTS: I. Peak values of the secondary voltage and current are specified in...
3. A resistor of R-10 0hms is connected in series with an inductor L-I mH. Afera batery with the e.m.f. of 1 V is connected across this RL circuin, what is the current as a function of time, i()? (25 pts.) Ileieyl Ie9n3 10.001 YHg 4. An AC transformer has two windings, Np5000 turns, N 500 turns. If the power supplied to the load is I kW, primary voltage is 2200 V, what are the voltage and the current in...
2. The secondary winding of a transformer has a terminal voltage of (t)=169.7 sin3141 V. The turn ratio of the transformer is 40:200. The impedances of this transformer referred to the primary side are: Rey-0.15 2. Re-50 Q2, X-0.25 S2, X-25 . If the secondary current of the transformer is i,(0=14.14 sin(3141-53.139) A, (a) What is the primary current of this transformer? (10%) (b) What are its voltage regulation and efficiency? (10%)
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