III B.Tech I Semester Supplementary Examinations, November 2006 ELECTRICAL MEASUREMENTS (Electrical & Electronic Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. (a) What is the principle of working of a repulsion type moving iron instrument? (b) Explain with the neat sketch the working of such an instrument.
(c) Discuss the various errors in moving iron instruments and suggest methods to compensate these errors. [4+6+6]
or ld
2. (a) In case of an unbalanced load ,prove that the sum of readings of two wattmeter’s is equal to the power consumed by 3 phase star connected load. (b) The readings of two wattmeters employed to measure power in a 3-phase , 3wire balanced load system are : w1= 2000w and w2=4000w.Find the power factor of the system. [10+6] 3. (a) Describe with a diagram the construction and working of a ROTATING COIL TYPE SINGLE PHASE power factor meter ?
uW
(b) What is the need for the use of a Synchroscope in power station.? Explain with a diagram the construction and working of a Moving iron type synchroscope ? [8+8] 4. (a) With a neat sketch explain the measurement of resistance using a potentiometer.
nt
(b) A potentiometer that is accurate to + or -0.0001 volts (standard deviation) is used to measure current through a standard resistance of 0.1+ or -0.1 ohm% (standard deviation). The voltage across the resistance is measured to be 0.2514 volts. What is the current and to what accuracy it has been determined? [8+8] 5. (a) Explain the operation of any one type of AC potentiometer. (b) Explain clearly how such a potentiometer can be employed for measurement of unknown inductance and unknown capacitance. [8+8]
Aj
6. (a) What are the different problems associated with measurement of low resistances. Explain. (b) How these problems are eliminated by using Kelvins double bridge. Explain [8+8]
7. Describe Heaviside bridge used for measurement of mutual inductance. What is Campbells modification for this bridge. Explain clearly with the help of circuit diagram. [16] 1 of 2
NR
Code No: NR310202
8. (a) Describe the construction and working of a moving coil ballistic galvanometer. (b) Describe the method of experimental measurement of flux density in a specimen of magnetic material using ballistic galvanometer. [8+8]
NR310202 III B.Tech I Semester Supplementary Examinations ...
(a) What are the different problems associated with measurement of low resis- · tances. Explain. (b) How these problems are eliminated by using Kelvins double ...
(b) The ground water level in a deposit of fine sand is 1.5 m below ground level. Above the water table ... is 21 kN/m3. Calculate the total stress, the neutral stress.
(b) Explain the following particle size measurement techniques. i. Sedimentation ... compaction. [6]. (b) Define Sintering and how is it different from hot pressing.
III B.Tech I Semester Supplementary Examinations, November 2005. AERO SPACE ... (b) Maximum energy theory. [16] ... plain with live examples. (b) Write a ...
4. What are the objectives of wage and salary administration function? [4+6+6] · 5. Write short notes on: · [4x4=16] · (a) Speculative purchasing · (b) Rate contract ...
(b) What is score boarding and its use in RISC? [10] · 5. (a) Explain the salient features of Pentium architecture. [6] · (b) Draw the schematic blocks of Floating ...
Which one you are saving by using statistical time-division multiplexing and prove · it. [16M] · 8. Give two full duplex protocols and explain their operation? [16M].
(a) Pattern plating process. (b) Tenting process. [8+8] · 7. (a) Draw the schematic diagram of magnetic amplifier with a center tapped trans- · former and D.C. ...
A reversible engine operating between a reservoir at 600 K and the ambient at- · mosphere at ... Determine the ratio of energy rejected by both the devices to the.
What is degree of reaction of a gas turbine; how it can be controlled, derive its ... A single stage free vortex turbine is designed for zero degree of reaction at root.
(b) Discuss the help of computers in Cardio vascular evaluation in ICU. [8] · 7. Discribe the use of computers for handicapped persons. Give two examples and.
(a) Explain the pre-anesthetic care and preparation undertaken in a hospital. Why it is important? Explain. [8] · (b) How the patients are monitored during surgery ...
III B.Tech I Semester Supplementary Examinations, November 2005. POWER ELECTRONICS · (Electrical & Electronic Engineering) · Time: 3 hours · Max Marks: 80 · Answer any FIVE Questions · All Questions carry equal marks · ***** · 1. (a) Explain the oper
(c) Explain inverted paging method of memory management. [4+4+8] · 4. (a) Explain banker's algorithm for deadlock detection. (b) What are the criteria for a ...
(a) Discuss the path sensitization in a combinational circuit. shown in figure1 · (b) Find the test set to detect A1- SA0 and A1- SA1 faults using Boolean difference.
8. The convolutional encoder is given below Figure1: · Figure 1: ... (b) Construct a code tree for the convolutional encoder for 3-bit input data. [10] · âââââ.
i. plain carbon steel with 4% carbon and 0.8% manganese, ... (a) It is required to design a square key for fixing a gear on a shaft of 30 mm · diameter; to transmit ...
TECHNIQUES OF METAL JOINING · (Metallurgy & Material Technology) · Time: 3 hours · Max Marks: 80 · Answer any FIVE Questions · All Questions carry equal ...
Figure 1 shows two views of a tripod bracket. All connections are pinned. Find · the forces in magnitude and nature in the three memebers due to a vertical load ...
(b) Explain the bridge type of thermocouple arrangement and mention its ... 3. The standard resistor arm of a Wheatstone bridge has a range from 0 to 100 ohm.
