MGVCL Exam Paper (30-07-2021 Shift 1) દુર્ગતિ' શબ્દનો વિરુદ્ધાર્થી શબ્દ ક્યો છે? કુગતિ અદુર્ગતી સુગતિ સળંગગતિ કુગતિ અદુર્ગતી સુગતિ સળંગગતિ ANSWER DOWNLOAD EXAMIANS APP
MGVCL Exam Paper (30-07-2021 Shift 1) Three resistances 750 Ω, 600 Ω and 200 Ω are connected in parallel. The total current is 1 A. Determine the voltage applied. 150 V 100 V 125 V 200 V 150 V 100 V 125 V 200 V ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Equivalent resistance of the circuit, Req = (750|| 600 || 200)Req = 125 ΩCurrent from source = 1 ASource voltage = 1*125Source voltage = 125 V
MGVCL Exam Paper (30-07-2021 Shift 1) The frequency of the emf in the stator of a 4-pole induction motor is 50 Hz, and that in the rotor is 2 Hz. What is the slip and at what speed is the motor running? 4%, 1455 rpm 3%, 1455 rpm 3%, 1440 rpm 4%, 1440 rpm 4%, 1455 rpm 3%, 1455 rpm 3%, 1440 rpm 4%, 1440 rpm ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Rotor frequency, f_r = s*f_ss = 2/50s = 0.04Ns = 120f/PNs = 1500 rpms = (Ns - Nr)/NsNr = Ns(1 - s)Nr = 1500*(1 - 0.04)Nr = 1440 rpm
MGVCL Exam Paper (30-07-2021 Shift 1) Consider the following two statements and choose the correct answer.Statement 1: The V-curves of a synchronous motor show relationship between armature current and supply voltage.Statement 2: The plot of power factor against the field current of synchronous motor is known as inverted V curves. Statement 1 is TRUE and Statement 2 is FALSE Both Statement 1 and Statement 2 are TRUE Both Statement 1 and Statement 2 are FALSE Statement 1 is FALSE and Statement 2 is TRUE Statement 1 is TRUE and Statement 2 is FALSE Both Statement 1 and Statement 2 are TRUE Both Statement 1 and Statement 2 are FALSE Statement 1 is FALSE and Statement 2 is TRUE ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The V-curves of a synchronous motor show relationship between Armature current (Ia) and Excitation current (If).The Inverted V-curves of a synchronous motor show relationship between power factor (pf) and field excitation (If).
MGVCL Exam Paper (30-07-2021 Shift 1) નીચેના રુઢિપ્રયોગોને અર્થ સાથે સાંકળી જોડી બનાવો.1. કાન કરડવા - 1. બાતમી મળી જવી.2. કાન ફૂંકવા - 2. વાત પર ધ્યાન ન આપવું.૩. કાને વાત પહોચવી - ૩. કાન 1-32-23-44-1 1-42-33-14-2 1-32-43-14-2 1-22-33-44-1 1-32-23-44-1 1-42-33-14-2 1-32-43-14-2 1-22-33-44-1 ANSWER DOWNLOAD EXAMIANS APP
MGVCL Exam Paper (30-07-2021 Shift 1) Which generation of computers used vacuum tubes? Third Generation Second Generation Fourth Generation First Generation Third Generation Second Generation Fourth Generation First Generation ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS