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.Management Sciences
Category: Electrical Engineering Mcqs
The breakdown of insulation of the cable can be avoided economically by the use of___________?
A. inter-sheaths
B. insulating materials with different dielectric constants
C. both (A) and (B)
D. none of the above
Steam turbines are governed by the following methods_____________?
A. Throttle governing
B. Nozzle control governing
C. By-pass governing
D. all of the above
At absolute temperature, an intrinsic semiconductor has________________?
A. A few free electrons
B. Many holes
C. Many free electrons
D. No holes or free electrons
In class A operation, the input circuit of a JFET is ____________ biased?
A. forward
B. reverse
C. not
D. none of the above
In series motor which of the following methods can be used for changing the flux per pole ?
A. Tapped field control
B. Diverter field control
C. Series-parallel control
D. Any of the above
The usual values of maximum flux densities for distribution transformers using hot rolled silicon steel are______________?
A. 0.5 to 0.8 Wb/m2
B. 0.8 to 1.0 Wb/m2
C. 1.1 to 1.35 Wb/m2
D. 1.4 to 1.8 Wb/m2
When the initial conditions of a system are specified to be zero it implies that the system is______________?
A. at rest without any energy stored in it
B. working normally with reference input
C. working normally with zero reference input
D. at rest but stores energy
The number 1000 would appear just immediately after__________________?
A. FFFF (hex)
B. 1111 (binary)
C. 7777 (octal)
D. All of the above
A synchronous converter can be started______________?
A. by means of a small auxiliary motor
B. from AC. side as induction motor
C. from D.C. side as D.C. motor
D. any of the above methods
E. none of the above methods
In which of the following equipment direct current is needed ?
A. Telephones
B. Relays
C. Time switches
D. All of the above
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