**BE8254 important 16 Mark questions Basic Electrical and Instrumentation Engineering**

BE8254 important 16 Mark questions Basic Electrical and Instrumentation Engineering Regulation 2017 Anna University free download.

BEIE Basic Electrical and Instrumentation Engineering important 16 Mark questions is provided to download for free in pdf.

**Sample BE8254 important 16 Mark questions Basic Electrical and Instrumentation Engineering**

1. A symmetrical three phase three wire 440V supply to a star connected load. The impedance in each branch are =2+j3Ω, =1-j2Ω and =3+j4Ω. Find its

equivalent delta connected load. (16)

2. A three phase balanced delta-connected load of 4+j8Ω is connected across a

400V, 3Ø balanced supply. Determine the phase currents and line currents

(Phase sequence in RYB). (16)

3. A symmetrical three –phase,three wire 400 V supply is connected to a deltaconnected

load.Impedances in each branch are ZRY=10∠ 300 Ω,ZYB= 10∠450Ω

and ZBR=2.5∠600 Ω . Find its equivalent star-connected load. (16) (BE8254 important 16 Mark questions Basic Electrical and Instrumentation Engineering)

4. (i). A three-phase four wire 120V ABC system feeds an unbalanced Yconnected

load with ZA=5∠00Ω ZB=10∠300 Ω and ZC=20∠600

Ω.Obtain the four line currents. (8)

(ii) Three impedances Z1=(17.32+j10) ,Z2=(20+j34.64)and Z3=(0-j10) ohms

are delta connected to a 400V,three phase system. Determine the phase

currents, line currents and total power consumed by the load. (8)

5. Explain three phase power measurement by 2 wattmeter method for star and

delta connected load and determine the power equation and draw the phasor

diagram. (16)

6. (i). Compare overhead and underground transmission lines. (8) 1 Remember

(ii). Explain about the conversion of star and delta conversion and write its

expressions for each conversion. (8) (BE8254 important 16 Mark questions Basic Electrical and Instrumentation Engineering)

Subject Name | BASIC ELECTRICAL AND INSTRUMENTATION ENGINEERING |

Subject Code | BE8254 |

Regulation | 2017 |

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