PGCIL JE EE NR1 Part1

PGCIL JE EE NRI
13-AUG-2021

 

1➤ 1. The ______ is numerically equal to the induced EMF in one coil due to unit rate of change of current in the other coil

1 pointcoefficient of statically self-induced EMFcoefficient of dynamically self-induced EMFcoefficient of mutual induction coefficient of coupling

2➤ Ampere hour meter is a/an:

1 pointrecording instrument integrating instrumentcompound instrument indicating instrument

3➤ At what value of load angle (δ) does the max power transfer in a power system

1 pointδ = 180°δ > 90°δ = 90°D. δ < 90°

4➤ What effect does the proportional parameter of control response have on the rise time in a closed-loop control system?

1 point It decreases It eliminatesNo changes It increases

5➤ What is the typical value of open-loop voltage gain, AVOL, for a 741 op-amp?

1 pointMore than 50,000More than 2,00,000More than 10,000More than 30,000

6➤ The ratio of the total number of lumens reaching the working plane to the total number of lumens emitting from source is known as:

1 pointwaste light factorabsorption factor coefficient of utilisationcoefficient of illumination

7➤ In the context of power generation, MHD stands for

1 point Magneto Hydro Dynamic Magnetic Hydraulic DynamicMagneto Hydro Dimension Magnetic Hydraulic Dimension

8➤ Which of the following types of damping is used in a permanent magnet moving coil instrument?

1 pointAir friction dampingEddy current dampingElectromagnetic dampingFluid friction damping

9➤ Which of the following controllers improves the transient response of a system?

1 pointThe proportional controllerThe proportional and integral controllersThe integral controllerThe derivative controller

10➤ ..........method is used for heating in the production of steel

1 point Indirect arc heatingDirect induction heatingDirect arc heatingInfrared heating

11➤ Which of the following is NOT the advantage of bundled conductors

1 pointImproved voltage regulation Reduced interferences with communication circuitsReduced corona loss due to larger cross-sectional areaReduced clearance requirements at structures

12➤ According to the latest practice, the approximate land required for a 220 kV substation is:

1 point 50 acres 25 acres 75 acres 20 acres

13➤ The clearance above ground for EHV lines shall NOT be less than

1 point 4.6 m 5.6 m 5.2 m 5.4 m

14➤ What is the value of crest for sinusoidal AC only?

1 point1.111.4140.7070.636

15➤ Torques are associated with synchronous motor; which of the following torques is also known as breakaway torque?

1 pointStarting torquePull in torqueRunning torquePull out torque

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