Sunday, 3 May 2020

 The velocity of a travelling electromagnetic wave in free space is given by 
(A) μ0 ε0
(B)√( μ0 ε0)
(C) 1/√( μ0 ε0)
(D) μ0 ε0
Answer - - C

A zero to 300 v voltmeter has a guaranteed accuracy of 1% full scale reading. The voltage measured by the instrument is 83V. The percent limiting error is:
(A) 0.95
(B) 1.81
(C) 3.62
(D) 4.85
Answer - - C

In a moving coil meters, damping is provided by
 (A) Eddy current disk
(B) The aluminum fram of te coil
(C) Damping in the air tight chamber
(D) The coiled spring attached to the moving mechanism
Answer - - B

A synchronous motor is essentially a motor with
 (A) Constant speed
(B) Leading power factor
(C) Unity power factor
(D) Lagging power factor
Answer - - A

The unique advantages of a hydropower plant are that it
(A) Burns no fuel
(B) Produces no pollution
(C) Is located in hills
(D) Both A and B
Answer - - D
The conductance of an electrical circuit is similar to the given in a magnetic circuit
(A) Flux
(B) Reluctance
(C) Permeance
(D) Relative permeability
Answer - - C

 With the introduction of capacity of a capacitor
 (A) Increases
(B) Decreases
(C) Does not change
(D) None of the above
Answer - - A

To increase the range of an ammeter
(A) A low resistance is connected in series with ammeter
(B) A low resistance connected in shunt with ammeter
(C) A high resistance connected in series with  ammeter
(D) None of the above
Answer - - B

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