Rajasthan Junior Instructor Electrician Paper 2019

RSMSSB Junior Instructor Electrician Paper 2019
Date of Exam – 24th March 2019

Coulomb force and gravitational force follow the same _______
(a) Ohm’s law
(b) Ampere’s law
(c) Invrse- square law
(d) Kirchoffs law

A network having one or more than one source of emf is known as
(a) Passive network
(b) Active network
(c) Linear network
(d) Non-linear network

Two resistances R1 and R2 give combined resistance of 4.5 Ohms when connected in series and 1.0 Ohm when connected in parallel. The resistances are
(a) 3 Ohms and 4 Ohms
(b) 3 Ohms and 9 Ohms
(c) 1.5 Ohms and 3 Ohms
(d) 1.5 Ohms and 0.5 Ohms

The resistance of a 100 W, 200 V lamp is
(a) 100 Ohms
(b) 200 Ohms
(c) 400 Ohms
(d) 1600 Ohms

The storage battery of a car has an emf of 12 V. If the internal resistance of the battery is 0.4 Ohm, what is maximum current that can be drawn fromt the batter?
(a) 50 A
(b) 28 A
(c) 32 A
(d) 30 A

Three 3 ohms resistors are connected to form a Triangle. What is the resisance between any two corners of the triangle?
(a) 0.75 Ohm
(b) 3 Ohm
(c) 2 Ohm
(d) 4/3 Ohm

Which of the following lamps will have least resistance at room temperature?
(a) 200 W, 220 V
(b) 100 W, 220 V
(c) 60 W, 220 V
(d) 25 W, 220 V

Thre resistors 2 ohms, 4 ohms and 5 ohms are combined in parallel. What is the total resistance of the combination?
(a) (18/20) Ohms
(b) (20/18) Ohms
(c) (19/20) Ohms
(d) (20/19) Ohms

What is the unit of specific resistance of a substance?
(a) Ohm
(b) mho
(c) ohm-cm
(d) ohm/cm

The resistance of a uniform metallic conductor is directly proportional to its
(a) Mass
(b) Length
(c) width
(d) Height

100 resistors of 100 Ohms each are connected in parallel. their equivalent reistance will be
(a) 10,000 Ohms
(b) 100 Ohms
(c) 1 Ohm
(d) (1/10000) ohms