**EKT Model Question Paper (Electrical & Electronics) – I with Answer Solution 2018**

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**EKT Model Question Paper (Electrical & Electronics) – I with Answer Solution 2018**

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**Q1. If x=a(cos t + t sin t), y=a(sin t – t cos t). The value of ^{dy}/_{dx} is**

- (a) cos t
- (b) sin t
- (c) tan t
- (d) sec
^{2}t

**Q2. The area of three faces of a cuboid are in the ratio 2:3:4 and its volume is 9000 cm ^{3}. The length of the shortest edge is**

- (a) 15 cm
- (b) 30 cm
- (c) 20 cm
- (d) 60 cm

**Q3. Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 3 or 5?**

- (a) 8/2
- (b) 9/20
- (c) 8/15
- (d) 2/20

**Q4. The projection of a vector on another vector is**

- (a) Scalar
- (b) Vector
- (c) neither vector nor scalar
- (d) either scalar or vector

**Q5. In MKS system, we measure**

- (a) mass in kilogram
- (b) distance in meter
- (c) time in second
- (d) all of these

**Q6. When the separation between two charges is made four times, the force between them**

- (a) increases four times
- (b) decreases four times
- (c) increases sixteen times
- (d) decreases sixteen times

**Q7. When a conductor cuts magnetic flux, an emf is induced in the conductor. This is known as**

- (a) Joule’s law
- (b) Faraday’s law
- (c) Coulomb’s law
- (d) Ampere’s law

**Q8. X-rays are used for the study of crystal structure because**

- (a) X-rays are completely absorbed by the crystal
- (b) the wavelength of X-ray is of the same order of magnitude in the inter-atomic spacing in crystals
- (c) the wavelength of X-rays is very small in comparison with the inter-atomic spacing in crystals
- (d) the crystals are completely transparent to X-rays

**Q9. A radioactive isotope has a half-life of 10 days. If today there are 125 g of it left, what was its original weight 40 days earlier**

- (a) 600 g
- (b) 1000 g
- (c) 1250 g
- (d) 2000 g

**Q10. Angles project true size only when the plane containing the angle and plane of projection are**

- (a) Aligned
- (b) Adjacent
- (c) Perpendicular
- (d) Parallel

**EKT Question Paper (Electrical & Electronics) – I Answer Key 2018 Download PDF File:**

**EKT Model Paper (Electrical & Electronics) – I**

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