Which one of the following is not an advantage of thermocouple ? O simple construction O self powered O fast response O non linear
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- Q# 4 What current I is flowing around a loop shown in Figure and Draw this current as function of time. What happens if someone suddenly cuts the wire? hepe P3.12 A carbon brush used to conduct current from the commutator of a DC generator has a length of 4 in. It must conduct a current of 400 A with a voltage drop not exceeding 2 V. Determine the cross-sectional area of this carbon brush. 3.13 Early DC machines use brass brushes instead of carbon brushes. The com- mutator bars do not last very long since brass is a rather hard metal. If a brass brush of the dimensions determined in problem 3.12 is used instead to conduct the same current, determine the voltage drop.I need this answer the subject is dc machine
- Load cells are used for the measurement of:Select one:a. Velocity O b. StrainO c. WeightO d. StressQ3\. A. Explain with sketches the operation of Digital phase meter. B. Why the dynamometer should be shielded and protected from any external magnetic fields? Q4 Calculate the value of the multiplier resistor for a 10 V rms ac range on the voltmeter in the figure. 10 V R₁ wwww Itsd = 1 mA R = 250 QA4 The field of a DC shunt generator is excited by al separate DC supply b) separate AC supply c) generator itself d) a battery
- A Read aloud V Draw aye viev Engineering Problems #7 March, 8 Four resistors are connected in parallel across a 200-mA independent cur rent source as shown in Figure P24. What is the voltage across the resistors and the current in each resistor? 200 mA U 009 U 001 U 08B2. Determine the resistance of an aluminium coil of 1.4 cm as diameter consists of 15600 turns and the mean length per turn is 43 cm. Take the electrical resistivity aluminium coil as 0.018 μ0-m. The area in cm² is The total length in m is The resistance of the coil in 2 isWhich of the following is NOT a variable in voltametric methods? A. How the current is applied B. How the potential is applied C. The inclusion of convection D. All the above E. Type of working electrode
- Q3: A universal fractional horsepower series motor has a resistance of 30 22 and a total inductance of 0.5 H. When connected to a 250 V d.c. supply and loaded to take 0.8 A, it runs at 2000 r.p.m. Estimate the speed and p.f. when connected to a 250 V a.c. supply and loaded to the same current.Q3: A universal fractional horsepower series motor has a resistance of 30 Q and a total inductance of 0.5 H. When connected to a 250 V d.c. supply and loaded to take 0.8 A, it runs at 2000 r.p.m. Estimate the speed and p.f. when connected to a 250 V a.c. supply and loaded to the same current.D Page view A Read aloud 4Draw NGR 111: Engineering Problems omework #7 202 For the DC circuit shown in Figure P28, find the voltage across each resistor and the current in each resistor. Find the power dissipations in the 20-1 and 100-2 resistors. Use Kirchhoff's Laws 20 2 500n 40 V 752 100 0