SSC JE / State Electricity Boards JE Electrical Exams QUIZ-4

Attempt now to get your rank among 1948 students!

Question 1

The speed-torque characteristic of a dc series motor operating from a constant voltage supply is

• A
• B
• C
• D

Question 2

An 8-pole, 50 Hz, 1-phase induction motor runs at a speed of 690 r. p. m. Its slip for forward rotating flux is

• A– 0. 08
• B+ 0. 08
• C+ 1. 92
• D1. 00

Question 3

A 2-conductor cable 1 km long is required to supply a constant current of 200 A throughout the year. The cost of cable including installation is Rs. (20a + 20) per metre where a is the area of cross-section of the conductor in cm². The cost of energy is 5P per kWh and interest and depreciation amount to 10%. The resistivity of the conductor material is 1.73 The most economical conductor size is

• A
• B
• C
• D

Question 4

Using grid of horizontally buried conductors A grounding system was formed which serves to dissipate the earth fault current, is called as -

• AEarth Grid
• BEarth Mat
• CBoth (A) and (B)
• DTower foot resistance

Question 5

An RLC circuit with relevant data is given below.

The power dissipated in the resistor R is

• A0.5 W
• B1 W
• C
• D2 W

Question 6

Calculate the value of unknown inductance measured by Hay’s bridge. Circuit elements are –
and supply angular frequency is 100 rad/sec –

• A1 H
• B2 H
• C3 H
• D4 H

Question 7

A diode is working under the forward-biased region. If the applied voltage increases in magnitude, the depletion region will continue to decrease. The current through the diode will:

• AIncrease linearly
• BIncrease exponentially
• CRemain constant
• DBe equal to zero

Question 8

A straight wire carrying a current of amperes is placed along the axis of a circular current-carrying coil. What is the force of interaction between the wire and the coil if a current of amperes flows in the coil? The radius of coil is metres.

• A tesla
• Binfinite
• C
• Dzero

• 1948 attempts
• 6 upvotes
• 14 comments