5. A PMMC voltmeter with a resistance of 10 ohms gives has a coil of effective depth of 3 mm and a width of 2.5 cm, the coil has about 100 turns. The flux spread in the air gap is of 10mWb/m². The spring has a constant of 2 x 10“. Then calculate, Deflection torque produced by the coil, when it is connected to 20V to measure. ii. Deflection made by the pointer, when the meter is to measure a voltage of 10V i.

5. A PMMC voltmeter with a resistance of 10 ohms gives has a coil of effective depth of 3 mm and a width of 2.5 cm, the coil has about 100 turns. The flux spread in the air gap is of 10mWb/m². The spring has a constant of 2 x 10“. Then calculate, Deflection torque produced by the coil, when it is connected to 20V to measure. ii. Deflection made by the pointer, when the meter is to measure a voltage of 10V i.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Similar questions

A toroidal coil, with a circular cross-sectional area of 0.2m2. The coil inductance is 0.28H. The coil has 500 turns. How much current should flow in the coil to get a flux linkage of 498? a. 498.000 A b. 140.000 A c. 1778.571 A d. 249000.000 A e. 889285.714 A
2. A two-legged core is shown in figure below. The winding on the left leg of the core (N,) has 600 turns, and the winding on the right (N2) has 200 turns. The coils are wound in the directions shown in the figure. If the dimensions are as shown, then what flux would be produced by currents i, = 0.5 A and iz = 1.00 A? Assume p, = 1000 and constant. -15 cm+ +i5 cm 15 cm 600 turns 200 turms 15 cm core depth- 15 cm [0.0054 Wb]
25 PROBLEMS 12 cm +1.5-mm gap IP1000t Armature (sheet steel) Cast steel A = 2 cm? throughout FIGURE 1.27. The relay shown in Figure 1.27 has a core made of cast steel and an armature of sheet steel. A flux of 0.8 T in the air gap produces a force that pulls in the CO armature. a. Determine the required current to pull in the armature. b. What force is exerted on the armature to overcome the spring tension? c. Assuming in the closed position the air gap is reduced to 0.1 mm, to what value may the current be reduced (dropout current of relay) just to retain closure? Assume that the same force is required in the closed position to overcome the spring force.
The sinewave has a peak voltage of 7 A and a Half cycle value of 9.3333 ms. What is the frequency? a. 214.28 Hz b. 321.42 Hz c. 53.57 Hz d. 35.71 Hz
In a moving coil instrument, the coil has a length of 5 cm, a width of 4 cm and 100 turns. The magnetic flux density in the air gap is 0.2 Wb/m2. The hair spring provides a controlling torque of 0.5*10-7 Nm/degree deflection of the coil. What current will be requrid to give a deflection of 600 ?
Find the hall coefficient of a silicon material used in a Hall generator with a gap distance is 2.0 cm. When a current of 300 A flows, the hall voltage is recorded as 10 V and a magnetic flux density of 0.2 T is produced. Lütfen birini seçin: a. 0.0461 b. 0.0074 c. 0.0695 d. 3.3333 e. 0.0033
Q9 / What are the function of brushes , pole and commutator in DC machine
clear and correct or dislike
A 500-turn coil is wound on an iron core. When a 120-V-rms 60-Hz voltage is applied to the coil, the current is 1 A rms. Neglect the resistance of the coil. Determine the reluctance of the core. Given that the cross-sectional area of the core is 5 cm2 and the length is 20 cm, determine the relative permeability of the core material.
ii) An emf, 2.5kV induced in a coil when a current of 2.75A collapses uniformly to 1.7SA in 4ms. Determine the flux induced in the coil in Webber-turns.
The voltage induced in 8 poles lamp wound generator is 120 V with armature resistance = 0.3 Q. What will be the terminal voltage at a load = 3.6 A when the machine is rewound as %3D a wave?
Can you solve the question step by step clearly ?