Quiz: Electrical Engineering 13 July 2020

Quiz: Electrical Engineering

Exam: SSC JE

Topic: Miscellaneous

Each question carries 1 mark.

Negative marking: 1/4 mark

Time: 10 Minute


Q1. Increase in percentage of carbon in carbon steel reduces

(a) resistivity

(b) coercive force

(c) permeability

(d) retentivity



Q2. Uniaxial anisotropy can be induced in bulk material by

(a) magnetic annealing

(b) magnetic quenching

(c) cold working

(d) any of the above method



Q3. The relative permeability is less than 1 in

(a) ferromagnetic material

(b) diamagnetic materials

(c) ferrites

(d) paramagnetic materials



Q4. The errors introduced by an instrument fall in which category?

(a) systematic error

(b) Random error

(c) Gross error

(d) Environmental error



Q5. Torque/weight ratio of an instrument indicates

(a) selectivity

(b) accuracy

(c) fidelity

(d) sensitivity



Q6. Sensitivity of a voltmeter is given as

(a) Ω/V

(b) reciprocal of full-scale deflection current

(c) both

(d) none



Q7. For defining a standard meter, wavelength of which material is used

(a) Neon

(b) Helium

(c) Krypton

(d) Xenon



Q8. The most suitable primary standard for frequency is

(a) Rubidium vapour standard

(b) Cesium beam standard

(c) Quartz standard

(d) Hydrogen maser standard



Q9. The following is not essential for the working of an indicating instrument

(a) deflecting torque

(b) braking torque

(c) damping torque

(d) controlling torque



Q10. Preferred material for permanent magnet is

(a) stainless steel

(b) alnico

(c) tungsten steel

(d) soft iron



S1. Ans. (d)

Sol. Retentivity


S2. Ans. (d)

Sol. Uniaxial anisotropy can be induced in bulk material by all of the following method

  • magnetic annealing
  • magnetic quenching
  • cold working


S3. Ans. (b)

Sol. diamagnetic materials


S4. Ans. (a)

Sol. systematic error


S5. Ans. (d)

Sol. Sensitivity


S6. Ans. (c)

Sol. Both


S7. Ans. (c)

Sol. Krypton


S8. Ans. (b)

Sol. Cesium beam standard


S9. Ans. (b)

Sol. braking torque


S10. Ans. (b)

Sol. alnico




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