1.In a shaded-pole induction motor, the part with copper ring is known as ____________, and the copper ring is known as _________, which is usually a single-turn coil
2.In a shaded-pole induction motor, the main core flux is ___________ by the flux in the ring that is developed by the ___________ current.
3.The property where magnetic field of one of the coils makes the other coil to induce an EMF in it is called _______.
4. Which of the following components are connected to the gearbox and generator box,respectively, in a horizontal-type wind turbine?
5.The instantaneous current in a circuit is given by i = 4 cos (ωt + θ) A. The RMS value of the current is:
6. How many terminals does a servo-motor contain?
7.Arrange the following in the increasing order of energy released during their processing as a biomass.
A) Bagasse
B) Municipal solid waste
C) Wheat and rice straw
D) Wood pellets
8. The dual pair of the node and open circuit are ____________
9.A power system consists of a coal-fired power plant of 800 MW with the availability factor of 0.8 and a wind farm of 400 MW with the availability factor of 0.5. Find the firm power of the system.
10.In the application of electrical and magnetic circuits, the heater element in an electric iron is manufactured by using ________.
11.A 400 W,100 V bulb is connected across a 50 V source. The current drawn by the bulb is_________.
12. If the peak value of an alternating current is 8 A, then the RMS value of the current will be________.
13.Calculate the line value of induced emf of a 10-pole, 3-phase, 60 Hz star-connected alternator with 60 slots and 4 conductors per slot. The value of the pitch factor is 0.966, the distribution factor is=0.966, the flux per pole is 0.12 Wb and it is sinusoidally distributed.
14. The armature reaction effect is high in ________.
15.Which of the following is used with the pressure coil to bring the flux produced by the shunt magnet exactly in quadrature with the applied voltage?
16.In case of magnetic circuits, the ratio of the flux density developed in the magnetic material to the flux density developed in air, for the same amount of magnetising force applied to it,is called _________.
17. Mechanical losses in a synchronous motor include:
18. What is the purpose of cost estimation?
19.In a capacitor start induction run motor, when motor reaches to ________ of full speed, the centrifugal switch S opens and cuts out capacitor from supply.
20.The range of a moving iron ammeter can be extended by using a ___________.
21.What will happen with a single-phase induction motor that has a short-circuited capacitor?
22.How many windings are present in auto transformers?
23.The no load ratio of a 50 Hz single-phase transformer is 2000/200 V. The maximum flux in the core is 0.05 Wb. What is the approximate number of primary turns?
24. Which of the following defines the use of a thermostat in an electric kettle?
25. Diffusion capacitance of a p-n junction diode increases with increase in the ________ and the________.
26. Which of the following types of fields is used as a coupling medium in all electromechanical conversion devices?
27. Which of the following statements is true regarding the voltage drop due to armature reaction for unity power factors in an alternator?
28.A JFET has the following parameters:I(DSS)=30mA,V(GS-OFF)=-5V,V(GS)=-4.5V.Find the value of current.
29. Which of the following is a desirable characteristic of a DC servomotor?
30.The compensation for light load is done by using a metallic strip provided between the________.
31.Consider the following statements about damper winding used to start a synchronous motor and choose the suitable combination of correct choices.
a) When a motor is overloaded it does not stop.
b) Synchronous motor made self-starting by providing damper winding.
c) Damper winding consists of short-circuited copper bars embedded in the face of the field poles.
d) Since damper winding resistance is high so it takes a small current from the supply mains.
32. In Electromagnetism, the field pattern of a magnetic field inside the toroid is _______.
33.In case of magnetic circuits, the flux produced per unit area of the magnetic material, for every unit of the magnetising force applied to it, is called _________.
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