4. A certain transformer has 250 turns in its primary winding. To double the voltage, how many turns must be on the secondary winding? 5. In the figure below determine Is. What is the value of RL? Fuse 20 V 100 mA 1:3 3|| lell www RL 6. A transformer has 2400 primary turns and 600 secondary turns. If the primary is supplied from a 220 VAC supply, which one of the following gives the resultant secondary voltage? A. 55 V B. 110 V C. 880 V

4. A certain transformer has 250 turns in its primary winding. To double the voltage, how many turns must be on the secondary winding? 5. In the figure below determine Is. What is the value of RL? Fuse 20 V 100 mA 1:3 3|| lell www RL 6. A transformer has 2400 primary turns and 600 secondary turns. If the primary is supplied from a 220 VAC supply, which one of the following gives the resultant secondary voltage? A. 55 V B. 110 V C. 880 V

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter4: Symbols

Section: Chapter Questions

Problem 7SQ: The symbol shown is a(n) a. iron core transformer. b. auto transformer. c. current transformer. d....

See similar textbooks

Similar questions

The symbol shown is a(n) a. iron core transformer. b. auto transformer. c. current transformer. d. air core transformer.
Q5. For the following center tapped transformer, show the waveform across each half of the secondary winding and across R, when a 100 V peak sine wave is applied to the primarywinding. What is the PIV rating must the diodeshave? (Use constant voltage drop model for the Silicon diode) D IN4001 OV 10 kN IN4001 DELL
A 200 V/100 V, 50 Hz transformer is to be excited at 40 Hz from 100 V side. For the exciting current to be constant, the applied voltage should be ?
DC 200 V is applied to the primary of a transformer with a conversion ratio of 1/5. From secondaryExplain the reason for this by writing the voltage value to be made?
The equivalent resistance of the primary of a transformer having K = 5 and R₁ = 0.1 ohm when referred to secondary becomes ............. ohm a) 0.5 b) 0.02 c) 0.004 d) 2.5
In the circuit in Figure 2, the capacitor connected to the a-b terminals of the transformer anda circuit consisting of resistance is defined as a load circuit. a)Find the average power spent by the load circuit? b) How much of the average power calculated in a) by the resistance in the load circuit and how muchspent by the capacitor? Comment on the results obtained?
Answer only please The resistance of a transformer winding is 0.25 ohm at 25oC. When operating at full load, the temperature of the winding is 75oC. The temperature coefficient of resistance for copper at 0oC is 0.00427 per oC. What is the winding resistance at full load? a. 0.512 ohm b. 0.315 ohm c. 0.298 ohm d. 0.271 ohm
The equivalent resistance of the primary of a transformer having K = 6 and R1 = 0.2 ohm when referred to secondary becomes.......ohm. Group of answer choices 0.004 7.2 0.72 0.0055
The equivalent resistance of the primary of a transformer having K = 2 and R1 = 0.2 ohm when referred to primary becomes.......ohm. Group of answer choices 0.05 2.5 0.02 0.004
a) The transformer has a turns ratio of 9.45, what is the dc load voltage considering the ripple voltage? b) The transformer has a turns ratio of 9.45, what is the dc load voltage without considering the ripple voltage?in 2 decimal places.
A voltage transformer in Figure 8 has 1,500 turns of wire on its primary winding and 500 turns of wire for its secondary winding. What will be the turns ratio, a of the transformer. If 240 volts is applied to the primary winding, what will be the resulting secondary voltage. And if a 400 n resistor is connected to the secondary winding, what are the values of current Is and Ip. primary Vp Transformer Core NF Ns Figure 8 secondary Vs
2-An ideal transformer consists of a primary winding (100 turn) and a secondary winding (1000 turn). The secondary winding is connected to a resistance (50 ohm). The amount of electric current in the secondary winding which equil to , when the voltage on the secondary winding is 100 volts