MGVCL Exam Paper (30-07-2021 Shift 1) In computer networks, the nodes are all the mentioned above the computer that terminates data the computer that originates data the computer that routes data all the mentioned above the computer that terminates data the computer that originates data the computer that routes data ANSWER DOWNLOAD EXAMIANS APP
MGVCL Exam Paper (30-07-2021 Shift 1) Murray loop test is performed on a faulty cable 300 m long. At balance, the resistance connected to the faulty core was set at 15 Ω and the resistance of the resistor connected to the sound core was 45 Ω. Calculate the distance of the fault point from the test end. 225 m 150 m 75 m 450 m 225 m 150 m 75 m 450 m ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Where,R2 is the resistance connected to the faulty core in ohmR2 is the resistance of the resistor connected to the sound core in ohmR1 Distance of fault location (Lx) = R2/(R1 + R2)*(2*L)= (15/60)*600= 150 m
MGVCL Exam Paper (30-07-2021 Shift 1) While selecting the gas for a circuit breaker, the property of gas that should be considered is its(i) dielectric strength(ii) non-inflammability(iii) non-toxicity (i) and (iii) only (i), (ii) and (iii) (i) and (ii) only (i) only (i) and (iii) only (i), (ii) and (iii) (i) and (ii) only (i) only ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Properties of gas while selecting circuit breaker,1. Dielectric strength.2. Thermal conductivity.3. Arc quenching.4. Electrical properties.5. Chemical properties. Toxicity of arc products.
MGVCL Exam Paper (30-07-2021 Shift 1) By inserting a plate of dielectric material between the plates of a parallel plate capacitor at constant potential, the energy stored in the capacitor is increased five times. The dielectric constant of the material is 25 1/5 1/25 5 25 1/5 1/25 5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Energy stored by capacitor, Q = ½CV²Dielectric constant is directly proportional to C and capacitance is proportional to the dielectrical constant
MGVCL Exam Paper (30-07-2021 Shift 1) An electric potential field is produced in air by point 1 μC and 4 μC located at (-2, 1, 5) and (1, 3, -1) respectively. The energy stored in the field is 5.14 mJ 12.50 mJ 10.28 mJ 2.57 mJ 5.14 mJ 12.50 mJ 10.28 mJ 2.57 mJ ANSWER DOWNLOAD EXAMIANS APP
MGVCL Exam Paper (30-07-2021 Shift 1) Insulation Power Factor testing on an oil-filled transformer is not helpful in determining ___ Movement of the windings (change in capacitance) Whether the oil test indicates moisture Condition of paper insulation (change in watts losses) Turns ratio values Movement of the windings (change in capacitance) Whether the oil test indicates moisture Condition of paper insulation (change in watts losses) Turns ratio values ANSWER EXPLANATION DOWNLOAD EXAMIANS APP A form of AC testing that applies voltage and measures the leakage/loss current of electrical insulation.It is a type of insulation testing used to evaluate the integrity of electrical insulation.
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